19-21 April 2017
Trieste - Italia
Europe/Rome timezone
Home > Contribution List
Displaying 139 contributions out of 139
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
The recent study on the the 6-year up-going muon neutrinos by the IceCube Collaboration and the multi-messenger analyses support the hypothesis of a two component scenario explaining the diffuse TeV-PeV neutrino flux. Depending on the steepness of the astrophysical power-law, an excess in the IceCube data is shown in the energy range 10-100 TeV (low-energy excess) or at PeV (high-energy excess). A ... More
Presented by Marco CHIANESE on 20 Apr 2017 at 09:40
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
The Higgs boson plays an important role in the Standard Model: it provides mass to the elementary particles through the electroweak spontaneous symmetry breaking (EWSB). Discovered in 2012 by the ATLAS and CMS collaborations, today the Higgs boson is a very powerful tool to test the validity of SM theory at the TeV scale. The Higgs boson can be produced at proton-proton colliders, such as LHC, in ... More
Presented by Marco SESSA on 19 Apr 2017 at 15:35
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
We present two techniques related to the production of rare isotopes and their consequent application fields. The first is related to the Darkside Experiment that makes use of liquid argon as sensible target for dark matter detection. In order to get an ultrapure and low radioactivity target, the argon will be purified in a 350 m tall distillation column placed in the Seruci mine in Sardinia (Aria ... More
Presented by Dr. Marco RAZETI on 21 Apr 2017 at 15:20
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
ALICE è un esperimento al Large Hadron Collider al CERN, dedicato allo studio della materia nucleare alle altissime densità di energia raggiungibili in urti di ioni pesanti ultra-relativistici. In queste condizioni quark e gluoni formano un mezzo deconfinato detto Quark Gluon Plasma (QGP). ALICE studia la produzione di stati del quarkonio in collisioni protone-protone, protone-Pb e Pb-Pb. L’ev ... More
Presented by Gabriele Gaetano FRONZé on 20 Apr 2017 at 17:40
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
INDIGO-DataCloud (INDIGO for short, see https://www.indigo-datacloud.eu) is a project started in April 2015, funded under the EC Horizon 2020 framework program. It includes 26 European partners located in 11 countries and addresses the challenge of developing open source software, deployable in the form of a data/computing platform, aimed to scientific communities and designed to be deployed on pu ... More
Presented by Diego MICHELOTTO on 20 Apr 2017 at 12:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
In view of the ATLAS Phase II Upgrade, a proposal to extend the detector acceptance of the muon system to large η (up to | η|~4) is being considered. The aim of the new detector is to tag muons, relying on the combination with the inner detector track for the momentum measurement. The new large-η Muon Tagger should cope with extremely high particle rate, dominated by background hits up to about ... More
Presented by Eleonora ROSSI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
I quark pesanti (charm e beauty) sono prodotti negli istanti immediatamente successivi all'urto ad alto momento trasferito di partoni in collisioni adroniche ad alta energia. Lo studio della produzione di quark pesanti in collisioni pp alle energie ultrarelativistiche di LHC rappresenta, da un lato, un potente strumento di indagine per testare le predizioni di QCD perturbativa e, dall'altro, forni ... More
Presented by Marianna MAZZILLI on 20 Apr 2017 at 17:25
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Gli sviluppi fatti durante gli ultimi anni nella tecnologia dei Silicon Photomultipliers (SiPM) rendono questi sensori delle alternative molto interessanti ai tradizionali tubi fotomoltiplicatori (PMT), nell’ambito di esperimenti di fisica basati sulla lettura della luce di scintillazione da Argon e Xenon liquidi. Rispetto ai PMT, i SiPM sono in grado di offrire una maggiore radiopurezza, affida ... More
Presented by Marco MARCANTE on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
The direct observation of high-energy cosmic rays, up to the PeV region, will depend on highly performing calorimeters, and the physics performance will be primarily determined by their geometrical acceptance and energy resolution.Thus, it is fundamental to optimize their geometrical design, granularity, and absorption depth,with respect to the total mass of the apparatus, probably the most import ... More
Presented by Gabriele BIGONGIARI on 21 Apr 2017 at 14:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
SHIP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recommended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group "Physics Beyond Colliders", aiming at presenting a CERN strategy for the European Strategy meeti ... More
Presented by Collaboration SHIP on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
The anomalous magnetic dipole moment of the muon can be both measured and computed to very high precision, making it a powerful probe to test the standard model and search for new physics such as SUSY. The previous measurement by the Brookhaven E821 experiment found a ~3 standard deviation discrepancy from the predicted value. The new g-2 experiment at Fermilab will improve the precision by a fact ... More
Presented by Anna DRIUTTI on 19 Apr 2017 at 11:50
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
The muon anomaly, aμ, is a low-energy observable, which can be both measured and computed to high precision, therefore it provides an important test of the Standard Model (SM) and it is a sensitive probe for new physics. The muon anomaly has been measured to 0.54 parts per million by the E821 experiment at the Brookhaven National Laboratory. This result shows a 3 to 4 standard-deviation differenc ... More
Presented by Graziano VENANZONI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
The top quark is the heaviest particle known in the Standard Model (SM) of particle physics. Due to its large mass, the top quark decays before hadronising. This fact gives the unique possibility to study the phenomenology of a bare quark. In particular, a precision measurement of the top quark mass is crucial to test the SM structure and to constrain any eventual dynamics beyond the SM. The top ... More
Presented by Maurizio DE SANTIS on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
The precision measurement of the anomalous magnetic moment of the muon presently exhibits a 3.5σ discrepancy with the Standard Model (SM) prediction. In the next few years this measurement will reach an even higher precision at Fermilab and J-PARC. While the QED and electroweak contributions to the muon g-2 can be determined very precisely, the leading hadronic (HLO) correction is affected by a l ... More
Presented by Dr. Umberto MARCONI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Nel corso del 2011 e 2012, il rivelatore LHCb ha raccolto dati prodotti dalle collisioni pp corrispondenti ad una luminosità integrata di 1 fb-1 per energia nel centro di massa di 7 TeV e 2fb-1 per un’energia nel centro di massa di 8 TeV rispettivamente. Con questo campione dati LHCb è in grado di misurare con estrema precisione i parametri associati alla matrice CKM. Nel sistema di mes ... More
Presented by Dr. Nicoletta BELLOLI on 21 Apr 2017 at 11:15
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, open to the scientific community, to investigate the very high-energy emission from a large variety of celestial sources in the energy range 20 GeV - 300 TeV. The full array, distributed over two sites, one in the northern and one in the southern hemisphere, will provide whole-sky coverage and will improve the s ... More
Presented by Dr. Stefano VERCELLONE on 19 Apr 2017 at 16:40
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Da qualche anno il CERN ha intrapreso un progetto di studi per la costruzione di nuovi collisori circolari (Future Circular Colliders) nella regione di Ginevra con un raggio di circa 100 km. Il primo stadio considerato e' un collisore e+e- (FCC-ee) operante ad energie comprese fra la massa della Z fin sopra alla soglia per la produzione di coppie tt. Questo permetterebbe di raccogliere una statis ... More
Presented by Dr. Biagio DI MICCO on 20 Apr 2017 at 16:30
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
The determination of the exact ordering of neutrino mass eigenvalues (Normal or Inverted Hierarchy) is one of the main open issues of neutrino physics, which has a significant impact both on the elementary particle model building and on the evaluation of the potentialities of present and future experiments (like the ones looking for neutrinoless double betha decays). An interesting possibility of ... More
Presented by Dr. Vito ANTONELLI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
L'esperimento NA62 al CERN mira ad un test stringente del Modello Standard e alla ricerca di Nuova Fisica tramite la misura del decadimento ultra-raro K+ → π+ ν ν. Nel 2016 si è svolto il primo periodo di presa dati con il rivelatore completo e il trigger digitale interamente operativo. Verranno illustrati i risultati ottenuti e il livello di sensibilità raggiunto, nonché le prospettive pe ... More
Presented by Jacopo PINZINO on 20 Apr 2017 at 14:15
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
I decadimenti rari K → π ν ν-bar sono decadimenti FCNC estremamente soppressi. Il loro BR è predetto dallo SM con una elevata precisione, ancora mai raggiunta dai risultati sperimentali. Una misura precisa del loro BR fornirebbe nuovi vincoli alla matrice CKM di unitarietà e permetterebbe di mettere in evidenza eventuali effetti di nuova fisica oltre lo SM. L’esperimento NA62 attualmente ... More
Presented by Dr. Silvia MARTELLOTTI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
L'esperimento ATLAS raccoglie miliardi di eventi ogni anno di presa dati e li elabora in modo da renderli disponibili per le analisi di fisica in diversi formati. Inoltre una quantità ancora maggiore di eventi vengono simulati secondo modelli di fisica e del rivelatore per poi essere ricostruiti e analizzati paragonandoli a eventi reali. L’EventIndex è un catalogo che comprende tutti gli event ... More
Presented by Dr. Andrea FAVARETO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
Il Large Area Telescope (LAT), principale strumento scientifico a bordo della missione spaziale Fermi, è un telescopio dedicato all'osservazione dei raggi gamma, in grado di coprire un range di energia che va dalle decine di MeV sino ad oltre 300 GeV. Tra le sue capacità chiave spiccano l'elevata accettanza, la possibilità di operare quasi ininterrottamente e l'ampio campo di vista (~20% dell'i ... More
Presented by Alberto MANFREDA on 20 Apr 2017 at 09:55
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
The associated production of the Higgs boson with a pair of top-anti top quarks (ttH) is the only process providing the direct access to the measurement of the Yukawa coupling between the Higgs boson and the top quark. Moreover, it allows to investigate new possible scenarios of physics Beyond Standard Model. The presented results exploit the data collected by the ATLAS experiment at LHC at a cent ... More
Presented by Silvia BIONDI on 19 Apr 2017 at 15:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
L’esperimento ALICE è stato progettato con lo scopo di studiare le caratteristiche del Quark-Gluon Plasma tramite le collisioni ultrarelativistiche nucleo-nucleo a LHC ed il confronto con quelle protone-protone e protone-nucleo. Per il periodo 2019-2020, durante il Long Shutdown 2 di LHC, è stato previsto un importante aggiornamento dei rivelatori di ALICE, tra cui l’installazione del nuovo ... More
Presented by Miljenko SULJIC on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The high luminosity upgrade of the LHC (HL-LHC) in 2026 will provide new challenges to the tracking detectors. In ATLAS the current inner detector will be replaced with a whole silicon tracker consisting of a five barrel layer Pixel detector surrounded by a four barrel layer Strip detector. To cope with the expected high radiation levels, the development of upgraded silicon sensors, as well as a ... More
Presented by Matteo SCORNAJENGHI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Recently there have been a boost in the research activities related to quantum simulations: on the one hand, recent experimental results showed how the field is becoming mature to provide interesting simulations of many-body physics. On the other hand, following the original idea put forward by Feynman, it has become clear that quantum simulators could be applied to a long-standing problem, namel ... More
Presented by Prof. Simone MONTANGERO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
La simulazione Monte Carlo gioca un ruolo fondamentale nel riprodurre un esperimento di fisica delle alte energie. In LHCb le interazioni delle particelle con gli elementi del rivelatore sono simulate in dettaglio con l'utilizzo del codice di trasporto GEANT4. Questo tipo di simulazione richiede grosse risorse di calcolo, che fanno si che la generazione di grandi campioni Monte Carlo sia tipicamen ... More
Presented by Benedetto Gianluca SIDDI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
The latest years have seen a resurrection of interest in hadron spectroscopy where the LHC experiments, using data collected at pp collisions at 7, 8 and 13 TeV, are playing a relevant role. The two pentaquarks observed in 2015 and the recent five narrow Ωc states are challenging our knowledge about QCD. A status report on the studies and searches for standard and exotic hadrons is presented.
Presented by Roberta CARDINALE on 21 Apr 2017 at 12:45
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
Thick-GEMs (THGEMs) are robust gaseous multipliers, derived from the GEM design and introduced in the early 2000s. They are proposed for large-scale applications in several fields. THGEMs consist of Printed Circuit Boards (PCBs) with a regular pattern of holes obtained by drilling; they are manufactured in large series and large size. Mass production of THGEMs has already started in collaboration ... More
Presented by Fulvio TESSAROTTO on 21 Apr 2017 at 14:20
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
The phenomenon of CP violation has been observed in the K- and B-meson systems, but not yet in the decay of any baryonic particle. Decays of beauty baryons to final states consisting of hadrons with no charm quarks are predicted to have non-negligible CP asymmetries in the SM, as large as 20% for certain three-body decay modes. The LHCb experiment is collecting unprecedented statistics of beauty b ... More
Presented by Daniele MARANGOTTO on 21 Apr 2017 at 11:30
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
Permanent electric dipole moments (EDMs) of fundamental particles provide powerful probes for physics beyond the Standard Model. We propose to search for the EDM of strange and charm baryons at LHC, extending the ongoing experimental program on the neutron, muon, atoms, molecules and light nuclei. The EDM of strange Λ baryons, selected from weak decays of charm baryons produced in pp collisions a ... More
Presented by Daniele MARANGOTTO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
An overview of the latest LHCb’s measurements in the charm physics sector is presented. This includes precise measurements of direct and indirect CP-violating observables and precise determination of mixing parameters in two-body D0 decays, CP violation in multi-body charm decays and searches of rare decays. Perspectives, in view of future LHCb Runs, will be also presented.
Presented by Michael Joseph MORELLO on 21 Apr 2017 at 11:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
The presence of a non-baryonic dark matter component in the Universe is inferred from the observation of its gravitational interaction. If dark matter interacts weakly with the Standard Model sector, it can be produced at the LHC. The ATLAS collaboration has developed a broad and systematic search program for dark matter production in LHC collisions. The experimental techniques, the results of the ... More
Presented by Marco VANADIA on 21 Apr 2017 at 10:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
We investigate the scalar sector in an extension of the Minimal Supersymmetric Standard Model (MSSM) containing a SU(2) Higgs triplet of zero hypercharge and a gauge singlet. In particular, we focus on a scenario of this model which allows a light pseudoscalar, lighter than the discovered Higgs boson, consistent with the most recent data from the LHC and the earlier data from the LEP experiments. ... More
Presented by Mr. Antonio COSTANTINI on 19 Apr 2017 at 15:50
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
I processi con cambiamento di sapore mediati da correnti neutre (FCNC) sono un campo molto fertile nella ricerca di effetti oltre il Modello Standard (MS). Nel MS questi decadimenti sono proibiti al livello ad albero e quindi fortemente soppressi. Ad esempio, i processi B(s) → ll e b → (s,d) ll danno accesso a molte osservabili, dove potrebbero essere misurati degli effetti di Nuova Fisica. L' ... More
Presented by Marianna FONTANA on 20 Apr 2017 at 14:45
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
In precedenza abbiamo sviluppato e testato con successo un prototipo di rivelatore RICH (Ring Imaging Cherenkov) consistente di una GEM a tre strati depositata con CsI, operante con gas in modo flussato. Nel presente lavoro, presentiamo una versione modificata di questo rivelatore per un’applicazione completamente differente – la prevenzione di incendi. Il rivelatore è sigillato ed è combina ... More
Presented by Giacomo VOLPE on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
LHCb e`l’esperimento all’LHC designato per lo studio dei decadimenti di adroni contenenti quark b e c. Per raggiungere questo scopo, l’esperimento include rivelatori progettati per ottenere un ricostruzione delle tracce di alta efficienza (>95%) con un’eccellente risoluzione sulla misura del momento (0.5% for p<20 GeV), mentre due rivelatori Ring Imaging Cherenkov consentono di identificar ... More
Presented by Lucia GRILLO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
La ricerca di controparti elettromagnetiche o emissioni di neutrini da parte di sorgenti di onde gravitazionali coinvolge una vasta comunità scientifica che nel corso degli ultimi anni ha sviluppato nuove competenze sia sul piano teorico che prettamente tecnologico. In questa presentazione delineeremo il percorso che ha portato alla nascita dell'astromonia multi-messaggera con le prime osservazio ... More
Presented by Giuseppe GRECO on 19 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
In questo talk faremo una panoramica generale della rivelazione diretta della dark matter. L’argomento di fisica sara’ introdotto brevemente con cenni storici passando poi agli esperimenti e alle tecnologie dei rivelatori piu’ comunemente usati. Saranno illustrate le caratteristiche principali delle tecnologie ed i risultati attesi. Non tutti gli esperimenti saranno menzionati per motivi di ... More
Presented by Dr. Marcello MESSINA on 20 Apr 2017 at 09:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Una determinazione precisa della massa del quark top è di fortissimo interesse teorico nell'ambito di studi sulla stabilità dello stato di vuoto del modello Standard. I metodi attuali di misura di questa osservabile stanno raggiungendo incertezze sperimentali paragonabili a quelle teoriche. Nuovi approcci alla determinazione della massa del quark top, che ne riducano sensibilmente le incertezze ... More
Presented by Giancarlo PANIZZO on 19 Apr 2017 at 14:50
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
The NA62 experiment is designed to measure the ultra-rare decay K+ → π+νν branching ratio. The Standard Model prediction is 8.4 x 10-11, requiring an high intensity beam. The intense flux of particles needs a high-performance trigger and data acquisition system, ensuring a high acceptance for the signal events together with a high rejection of the decays accounting for most of the rate. The L ... More
Presented by Dario SOLDI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Le misure dei processi dei bosoni vettori W e Z ad LHC consentono di verificare la validità del Modello Standard (MS) a scale di energia in precedenza inesplorate e possono quindi fornire preziose indicazioni nella ricerca di nuova fisica. In particolare, la misura di precisione della massa del W rappresenta un importante test della consistenza complessiva del MS, mentre le misure di sezione d ... More
Presented by Camilla VITTORI on 19 Apr 2017 at 15:05
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Since the discovery of the Higgs boson in 2012 several measurements have investigated the properties of this new particle, providing detailed information concerning its coupling to Vector bosons. Conversely, little is known about the Higgs boson’s coupling to fermions. In this context, more accurate studies must be conducted in order to further test the validity of the Standard Model: fermionic ... More
Presented by Carlo VARNI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Presented by Mr. Marco MIRRA on 19 Apr 2017 at 12:20
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Presented by Ms. Marzia BORDONE on 20 Apr 2017 at 15:20
Type: Oral contribution Session: Apertura
Track: Sessione Frontiera Intensità
Presented by Paride PARADISI on 19 Apr 2017 at 10:50
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Presented by Dr. Giovanni Marco PRUNA on 19 Apr 2017 at 11:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
The DarkSide programme aims to perform direct search for Dark Matter exploring WIMP-nucleon cross section down to the neutrino floor employing a dual phase TPC filled with Argon. Liquid argon is a unique scintillating material allowing an exceptional rejection of electron induced background events by means of pulse shape discrimination. This, together with neutron and muon vetoes, allows the curr ... More
Presented by Claudio SAVARESE on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Recent results on Standard Model and Higgs measurements performed by the ATLAS and CMS collaborations will be reported.The presentation will include results based on LHC Run II data, with particular relevance on most recent ones.Vector boson production, Jets, Photons, Top physics, and different Higgs production mechanisms will be overviewed. Precision measurements reachable with Run II data are di ... More
Presented by Andrea MASSIRONI on 19 Apr 2017 at 14:25
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
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Presented by Mr. Marco ZARO on 19 Apr 2017 at 14:00
Session: Apertura
Presented by Prof. Maurizio FERMEGLIA, Prof. Fulvio PARMIGIANI, Prof. Rinaldo RUI on 19 Apr 2017 at 10:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
The top quark, given it's high mass with respect to the other quarks and leptons, is expected to play a special role in searching for Physics Beyond the Standard Model. In particular, new heavy particles predicted by different models couple preferentially to top quarks, making searches involving top quarks in the final state of great interest.These include the search for for heavy neutral resonanc ... More
Presented by Michele PINAMONTI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Apertura
Presented by Prof. Luigi ROLANDI on 19 Apr 2017 at 10:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
We report here the results of the search for the Higgs boson pair production where one Higgs boson decay via h->bb and the other via h->WW*->lvqq. where l is either an electron or a muon. This search uses the full dataset 2015 (3.2 fb-1) plus 2016( 33.3 fb-1) of proton-proton collision data at the center of mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider (LHC). ... More
Presented by Mr. Muhammad SOHAIL on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
La cromodinamica quantistica rappresenta una teoria ormai consolidata dell'interazione forte, sebbene ancora oggi alcuni dei suoi aspetti fondamentali non sono pienamente compresi. Le questioni ancora aperte riguardano la transizione tra fase partonica e quella adronica, la natura del confinamento, e il comportamento della materia adronica ad alte temperature. E’ previsto infatti che la materia ... More
Presented by Giacomo VOLPE on 20 Apr 2017 at 16:45
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Lo studio della fase deconfinata della materia nucleare, nota come Plasma di Quark e Gluoni (QGP), e' stato tradizionalmente portato avanti per mezzo di collisioni tra ioni pesanti accelerati ad energie (ultra)relativistiche, utilizzando come necessario riferimento le misure effettuate in collisioni protone-protone (p-p) e protone-nucleo (p-A). Di recente, collisioni elementari (p-p) caratterizzat ... More
Presented by Dr. Livio BIANCHI on 20 Apr 2017 at 17:10
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
The results and prospects for searches beyond the Standard Model (SM) at the LHC by the ATLAS and CMS collaborations are presented. Few extensions of the SM has been reported in various final states at 13 TeV center of mass energy at LHC, including di-Higgs production, heavy resonances and displaced decays. The data are found to be consistent with the Standard Model. The non-observation of a signa ... More
Presented by Monica VERDUCCI, Tommaso LARI on 21 Apr 2017 at 09:20
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
In this talk I will review some recent advances in beyond the Standard Model physics. Taking a critical theoretical perspective, I will discuss naturalness and its implications, dark matter, and various aspects of LHC physics.
Presented by Luca VECCHI on 21 Apr 2017 at 09:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The Large Hadron Collider (LHC) at CERN obtained several important results such as the discovery of the Higgs Boson. However, the study of Standard Model parameters and the search for new physics can be enhanced by acting on two key parameters: energy and luminosity. Particle beams at LHC will reach the design energy (14 TeV in the center of momentum frame) within the end of Run 2, while the desig ... More
Presented by Nico GIANGIACOMI on 21 Apr 2017 at 17:00
Session: Conclusioni
on 21 Apr 2017 at 15:45
Session: Conclusioni
on 21 Apr 2017 at 15:55
Session: Conclusioni
on 21 Apr 2017 at 16:15
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Presented by Lucio ANDERLINI on 20 Apr 2017 at 14:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
The family of decays mediated by $b \to s l^+ l^-$ transitions provides a rich laboratory to search for effects of physics beyond the Standard Model. In recent years LHCb has found hints of deviations from theoretical predictions both in the rates and angular distributions of such processes. In addition, hints of lepton flavour non-universality have been seen when comparing $B^+ \to K^+\mu^+\mu^-$ ... More
Presented by Mr. Simone BIFANI on 20 Apr 2017 at 15:00
Presented by Silvia DALLA TORRE, Andrea BRESSAN on 20 Apr 2017 at 16:25
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
The production of prompt photons in association with jets in proton–proton collisions provides a testing ground for perturbative QCD with a hard colourless probe, less affected by hadronization effects than jet production. The measurements of the angular correlations between the photon and the jets can be used to probe the dynamics of the hard-scattering process. Cross section measurements usin ... More
Presented by Giuseppe CALLEA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
L'esperimento Mu2e al Fermilab ricerca la conversione coerente di muone in elettrone nel campo elettrico di un nucleo, μ + N(A,Z) ->e + N(A,Z). Si tratta di un esempio di violazione della conservazione del numero leptonico nel settore dei leptoni carici (CLFV) mai osservato sperimentalmente. Secondo il Modello Standard, la probabilità per tali processi è trascurabile (BR ~10^-54). Esistono tut ... More
Presented by Ms. Eleonora DIOCIAIUTI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
The EUSO collaboration has been studying a detector to be installed on the International Space Station which will observe UHECR from space for the first time. The observation of Ultra-high-energy cosmic rays (UHECR) from space offers several advantages such as large field of view, uniform observation of both celestial hemispheres, uniform detector response. For these reasons, space-based observato ... More
Presented by Dr. VALENTINA SCOTTI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
Plasma-based acceleration has already proved the ability to reach ultra-high accelerating gradients. A significant improvement in the efficiency of particle-driven plasma wakefield acceleration has been demonstrated so far accelerating a witness bunch in the wake of a higher charge driver bunch [1]. Both the transformer ratio and the energy transfer from the driver to the witness beam can be incre ... More
Presented by Enrica CHIADRONI on 20 Apr 2017 at 12:40
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
L’elevata energia nel centro di massa (attualmente 13 TeV) e luminosita’ integrata totale disponibili a LHC permettono studi del quark top con una precisione mai raggiunta prima. Essendo l’unico quark che decade prima della fase di adronizzazione, rappresenta un’ opportunita’ unica per lo studio delle proprieta’ dei quark “nudi”. Grazie alla disponibilita’ di calcoli teorici di Q ... More
Presented by Serena PALAZZO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
L'esperimento KLOE-2 ai Laboratori Nazionali di Frascati (LNF) dell'INFN è attualmente in presa dati al collisore e+e- DAFNE ed ha finora raccolto una luminosità integrata di più di 3 fb-1, con l’obiettivo di raggiungere i 5 fb-1 entro fine marzo 2018. Il rivelatore KLOE è stato rinnovato con l'aggiunta di alcuni nuovi rivelatori tra cui un innovativo tracciatore a GEM con geometria cilindri ... More
Presented by Mr. Andrea SELCE on 21 Apr 2017 at 12:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
Le recenti misure di IceCube hanno evidenziato una discrepanza fra ciò che viene osservato utilizzando i muoni passanti (che osservano il cielo nord) e ciò che viene osservato usando gli eventi contenuti nel rivelatore, i cosiddetti HESE (che guardano essenzialmente il cielo sud). Questo è un fatto sorprendente e non atteso, che porta a chiedersi se i flussi provenienti dai due emisferi abbiano ... More
Presented by Mr. Andrea PALLADINO on 19 Apr 2017 at 18:30
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Dark Matter (DM) production and detection is one of the most challenging goal at the Large Hadron Collider (LHC). Despite there are no direct evidences, its existence in the Universe is highly motivated by many astrophysical and cosmological observations. If interactions between DM and SM particles exist, DM particles can be pair produced at LHC. Since WIMPs are weakly interacting a way to observe ... More
Presented by Francesco CIROTTO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Despite the lack of experimental evidence from LHC Run 1, supersymmetry (SUSY) remains one of the most promising and motivated Standard Model extensions. Supersymmetry models with light partners of the top quark (top squarks or stops) are well motivated since they limit the dominant correction to the Higgs boson mass and thus preserve naturalness. In this talk, the latest results in searching for ... More
Presented by Luigi LONGO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
A summary on Higgs boson pair production searches is presented using pp collision data collected at sqrt(s)= 13 TeV by the ATLAS detector at the Large Hadron Collider in 2015 and 2016 data-taking. The different final states 4b, bbyy, bbtautau, WWbb e WWyy have been investigated. Results are interpreted as non resonant SM-like hh production and a narrow heavy Higgs boson decaying to hh pairs. No ev ... More
Presented by Monica VERDUCCI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Studies have been performed in order to pose limits on BSM couplings related to additional EFT contributions to the SM Lagrangian. In this picture, the VBF and VH production mechanisms shows a good sensitivity to BSM contributions to the HZZ vertex. Measurements are therefore performed in reduced phase spaces enriched in each production mode, obtained by categorizing the events in fiducial volumes ... More
Presented by Giada MANCINI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
We develop an iterative approach to span the whole set of exotic matter models able to drive a traversable wormhole. The method, based on a Taylor expansion of metric and stress-energy tensor components in a neighbourhood of the wormhole throat, reduces the Einstein equation to an infinite set of algebraic conditions, which can be satisfied order by order. The approach easily allows the implementa ... More
Presented by Dr. Mattia MANFREDONIA on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
Directional DM search experiments face different challenges especially for the reconstruction of the recoil track and the detector scalability to very large masses while keeping the zero background level. The so-called neutrino floor, where the directionality becomes essential, requires at least a ton-scale detector. These masses are achievable by solid- or liquid-state detectors, but the reconstr ... More
Presented by Andrey ALEXANDROV on 21 Apr 2017 at 14:40
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
Il progetto COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) si propone di sviluppare calorimetri criogenici scintillanti per la ricerca di materia oscura, utilizzando ioduro di sodio (NaI) come assorbitore. Questo tipo di rivelatori permette di misurare simultaneamente la luce di scintillazione ed il segnale di calore indotti dall'interazione delle parti ... More
Presented by Lorenzo PAGNANINI on 21 Apr 2017 at 15:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
The $B^0$, $B^0_s$, $B^+$ and $\Lambda^0_b$ hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0$fb^{-1}$, collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV. The $B^0$, $B^0_s$ and $B^+$ production asymmetries are measured by means of $B^0 \to J/\psi(\mu^+ \mu^-) K^{*0}(K^- \pi^+)$, $B^0 ... More
Presented by Fabio FERRARI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
Isospin symmetry is an approximate symmetry of the strong interactions whose breaking is induced in Nature by the different masses and electric charges of the up and down quarks. This introduces small corrections to physical quantities of O (1%) that are crucial, however, to describe the structure of atomic matter and that nowadays cannot be neglected given the level of precision reached in the ex ... More
Presented by Davide GIUSTI on 21 Apr 2017 at 11:45
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Con l’incremento della luminosità integrata ad LHC la ricerca di particelle di possibili candidati di materia oscura assume sempre maggior rilevanza. Nell'ambito di modelli semplificati per la produzione della materia oscura all'LHC, la materia oscura è prodotta attraverso il decadimento di un mediatore con accoppiamenti sia alle particelle del modello standard che alla materia oscura. Per med ... More
Presented by Mr. Edoardo Maria FARINA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
B mesons are the lightest mesons which can decay to various final states containing different baryons. Up to now, the discrepancy between the inclusive branching fraction of all B meson decay modes with at least a couple of baryons in the final state, measured by ARGUS to be (6.8 +- 0.6)% , and the sum of exclusive baryonic channels, averaged on neutral and positive B mesons at less than 1%, repre ... More
Presented by Laura ZANI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
The Cryogenic Underground Observatory for Rare Events (CUORE) is a ton-scale bolometric experiment searching for neutrinoless double beta decay in Te-130. The detector consists of a compact array of 988 TeO2 crystals arranged in 19 towers. The construction of the detector was completed in August 2016. The experiment is now in pre-operation phase and data taking is commencing. In this talk, beyond ... More
Presented by Sergio DI DOMIZIO on 20 Apr 2017 at 09:20
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
L'esperimento MEG presso il PSI ha ricercato la violazione del sapore leptonico nel processo µ → e γ con sensibilità mai raggiunte prima. La presa dati è durata 5 anni dal 2009 al 2013 e, utilizzando metà del campione statistico raccolto, la collaborazione ha fissato il limite superiore al processo ad essere <5.7 x 10^-13 @ 90% CL, con una sensibilità di 7.7 x 10^-13. Presenterò il risul ... More
Presented by Luca GALLI on 19 Apr 2017 at 11:35
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The RICH-1 Detector of the COMPASS Experiment at CERN SPS has been upgraded for the physics run 2016: four new Photon Detectors, based on MPGD technology and covering a total active area larger than 1.2 square meters replace the previously used photon detectors, namely MWPCs with CsI photocathodes, in order to cope with the challenging efficiency and stability requirements of the new COMPASS measu ... More
Presented by Mr. Chandradoy CHATTERJEE on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
Un tracciatore a GEM cilindriche (CGEM) e’ in costruzione per sostituire e migliorare il sistema di tracciamento interno, nella regione prossima al punto di interazione, dell’esperimento BESIII. Consistera’ di tre strati di triple GEM di forma cilindrica. Sara’ installato nello spettrometro, in funzione a BEPCII (Pechino, Cina), nel 2018. Prototipi di camere planari sono stati testati sull ... More
Presented by Lia LAVEZZI on 20 Apr 2017 at 12:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
With their excellent energy resolution, efficiency, and intrinsic radio-purity, cryogenic calorimeters are primed for the search of neutrino-less double beta decay (0nDBD). The sensitivity of these devices could be further increased by discriminating the dominant alpha background from the expected beta like signal. The CUPID-0 collaboration aims at demonstrating that the measurement of the scintil ... More
Presented by Lorenzo PAGNANINI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Abstract : The ATLAS pixel detector has been exposed to considerable levels of radiation during its operation at the LHC, up to 2x1014 neq /cm2. By the end of run3 in 2023, the integrated luminosity and fluence will have further increased by an order of magnitude. Radiation damage effects are already visible, and they will increasingly affect the detector performance in the coming future. Therefo ... More
Presented by Lorenzo ROSSINI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
A summary of the searches for heavy resonances decaying in dibosons is presented, performed on data produced by LHC p-p collisions at sqrt(s) = 13 TeV and collected with the CMS detector during 2016. The common feature of these analyses is the boosted topology, namely the decay products of the considered bosons (both electroweak (W, Z) bosons and the Higgs boson) are expected to be highly energeti ... More
Presented by Lisa BENATO on 21 Apr 2017 at 10:15
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
any well established models extending beyond Standard Model (e.g. Grand Unified Theory, Sequential Standard Model or models proposing extra spatial dimension(s)) predict the existence of new heavy neutral bosons that would decay in two leptons. A search for new narrow resonances, generically referred as Z', in the dielectron and dimuon decay channels has been performed using data collected by the ... More
Presented by Filippo ERRICO on 20 Apr 2017 at 18:10
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
A search for a heavy resonance decaying to Zgamma, with the Z boson further decaying to jets or leptons, is presented. The final state with jets is studied in the boosted regime, where the two jets from the Z are merged in one. The search strategy is to look for an excess above the non-resonant Standard Model background on the J+gamma or llgamma invariant mass spectrum. The search is based on the ... More
Presented by Simone GELLI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The External Injection (SL-ExIn) experiment aims at demonstrating the possibility to accelerate a high brightness electron bunch by plasma wakefields in a stable and reproducible way, without spoiling its phase space quality. The plasma wakefield is excited through a high power laser guided by a dielectric capillary. Simulations[1] show this is actually feasible and foresee an accelerating gradien ... More
Presented by Dr. Andrea Renato ROSSI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
New Physics beyond the standard model (SM) can be revealed by analyzing processes which are expected to happen with very low probability in the SM: among these, the flavor-changing neutral current (FCNC) decay B0 → K* µ µ is particularly promising. Recent results from LHCb collaboration show that the expected values of the parameter P'5 differ by more than three standard deviations from the me ... More
Presented by Alessio BOLETTI, Umberto DE SANCTIS on 20 Apr 2017 at 14:30
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
The talk will report on the INFN ATLAS-CMS joint research activity in collaboration with FBK, which is aiming at the development of new thin pixel detectors for the high luminosity upgrade of the LHC (HL-LHC). The talk will cover the main aspects of the research program, including the sensor design and fabrication technology. The RD covers both planar and 3D, made with columnar technology, pixel d ... More
Presented by Prof. Mauro Emanuele DINARDO on 20 Apr 2017 at 11:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Nel contesto dell’infrastruttura cloud presso la sezione INFN di Torino, è stato implementato un tool basato su OpenNebula per l’installazione semiautomatica di una infrastruttura cloud elastica con servizi di monitoring, mantenimento dell’infrastruttura e gestione delle VM. Tale strumento, dedicato a piccole e medie infrastrutture cloud, è in grado di migliorarne sensibilmente l’usabili ... More
Presented by Jacopo PELLEGRINO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Sono presentati i risultati più recenti dell’esperimento CMS relativi alla ricerca di produzione risonante di coppie HH nel canale 4b. La produzione risonante di coppie HH è prevista in molteplici scenari di nuova fisica, e lo stato finale a 4 quark b è uno dei più sensibili, grazie all’alto branching ratio dell’Higgs in coppie di b-quark. La ricerca di questo tipo di risonanze copre un ... More
Presented by Leonardo GIANNINI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
After the discovery of the Higgs boson all the parameters of the Standard Model have been measured and therefore it is possible to exploit the predictive power of the theory to set more stringent limits to known observables. A significant deviation of the measured values from the prediction would be an indirect hint of physics beyond the SM. The precision with which the W boson mass is predicted ( ... More
Presented by Elisabetta MANCA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
In questo intervento vengono presentati i risultati ottenuti dall’esperimento ALICE (A Large Ion Collider Experiment) inerenti la produzione di deutoni, 3He e 4He e dei rispettivi anti-nuclei in collisioni tra ioni di piombo a energie nel centro di massa di 2.76 TeV per coppia di nucleoni al Large Hadron Collider (LHC). Nello specifico, vengono presentati gli spettri in momento trasverso e gli s ... More
Presented by Luca BARIOGLIO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Outstanding time resolution will be an asset at the High Luminosity Large Hadron Collider (HL-LHC), where locating the primary interaction vertex will be extremely challenging due to the large number of interactions per bunch crossing. The upgrade of the Compact Muon Solenoid (CMS) crystal electromagnetic calorimeter (ECAL), which will operate at the HL-LHC, will achieve a timing resolution of aro ... More
Presented by Riccardo SALVATICO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
ALICE (A Large Ion Collider Experiment) è uno degli esperimenti al Large Hadron Collider (LHC) del CERN a Ginevra, ed ha lo scopo di caratterizzare il Quark Gluon Plasma (QGP), uno stato della materia in cui quark e gluoni risultano deconfinati, per mezzo di collisioni tra nuclei Piombo fino ad una energia di 5.5 TeV per nucleone nel centro di massa. Nel 2021 inizierà il terzo run di LHC dopo un ... More
Presented by Ivan RAVASENGA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
Dark matter is one of the pillars of the Standard Cosmological Model, but its nature is today still unknown. Its possible connection with theories beyond the Standard Model of particle physics makes dark matter one of the most important open problems in modern cosmology and particle physics, as witnessed by the enormous theoretical and experimental effort that is being put towards its identificati ... More
Presented by Ms. Alba DOMI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
The COMPASS Experiment at CERN is celebrating this year the $20^{th}$ anniversary of its' activity after the approval in 1997 and in this presentation an overview of the recent results on the Transverse Momentum Dependent (TMD) effects in semi-inclusive DIS reactions will be given. TMD effects have been investigated both in unpolarised SIDIS by measuring the dependence of charged hadrons multiplic ... More
Presented by Giulio SBRIZZAI on 21 Apr 2017 at 12:15
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Supersymmetry is one of the most motivated Standard Model extensions. Despite the meticulous search during the LHC Run I, there is no evidence supporting this theory. Starting from 2015, LHC is performing a second data taking run with a higher center of mass energy (13 TeV), providing a great occasion for the search of beyond the Standard Model physics. An analysis in progress, base on the 2015-20 ... More
Presented by Ms. Sonia CARRà on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
In this contribution I will review the most recent progresses towards the development of a silicon detector able to provide accurate measurements in both space and time, the so-called 4-dimension tracking. In particular, the Ultra-Fast Silicon Detectors (UFSD) project is described by discussing working principles of devices, technological state-of-the-art, measurements and TCAD (Technology Comput ... More
Presented by Marco MANDURRINO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The study of CP violation in the leptonic sector require measurements of absolute neutrino cross sections at the GeV scale with a precision of ~1% level which is up to now at the level of 10% due to uncertainties on neutrino flux at the source. The ENUBET project (Enhanced NeUtrino BEams from kaon Tagging, ERC-CoG-2015 grant) is developing an innovative technique to produce intense sources of elec ... More
Presented by Dr. Michele POZZATO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Large-size multilayer resistive Micromegas detectors will be employed for the Muon Spectrometer upgrade of the ATLAS experiment at CERN. The current innermost stations of the muon end-cap system, two 10 m diameter wheels, will be upgraded in the 2019-2020 long shut-down of LHC, to retain the good precision tracking and trigger capabilities in the high background environment expected with the upcom ... More
Presented by Gianluca INTROZZI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Viene presentata una ricerca di fisica oltre il modello standard nello stato finale con due leptoni dello stesso sapore (elettroni o muoni) e due quark, prodotti in urti protone-protone ad energia nel centro di massa di 13 TeV. I dati sono stati raccolti dall'esperimento CMS e corrispondono ad una luminosità integrata di 2.3 inverse fb. I risultati della misura sono interpretati considerando un n ... More
Presented by Roberto LEONARDI on 21 Apr 2017 at 09:45
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
L'esperimento Belle II è un sostanziale upgrade dell'esperimento Belle e opererà presso la B-factory SuperKEKB, situata al laboratorio KEK a Tsukuba, Giappone. Sebbene Belle II sia stato appositamente progettato per effettuare misure di precisione relative al quark bottom, esso sarà anche un laboratorio ideale per lo studio delle proprietà del quark charm. E' previsto che l'esperimento collezi ... More
Presented by Giacomo DE PIETRO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
We search for single-photon events in 53 fb-1 of e+e- collision data collected with the BABAR detector at the PEP-II B-factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A’ through the process e+e- -> gamma A’, A’ -> invisible. Such particles, referred to as “dark photons”, are motivated ... More
Presented by Fabio ANULLI on 19 Apr 2017 at 12:05
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
L'esperimento Belle II al collisionatore e+e− SuperKEKB fornirà un campione di dati sperimentali 50 volte superiore a quello raccolto dalla precedente generazione di B-factories BaBar e Belle. Questo contributo descrive lo stato della costruzione del rivelatore e dell'acceleratore e il programma di Fisica del Flavour dell'esperimento. Tale programma, grazie alle caratteristiche uniche delle col ... More
Presented by Guglielmo DE NARDO on 20 Apr 2017 at 15:35
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Il Cherenkov Telescope Array (CTA) Consortium sta sviluppando la nuova generazione di osservatorio a terra per la rivelazione di gamma-ray ad alte energie. L'INFN sta sviluppando una possibile soluzione per la camera di fotoni Cherenkov basata su rivelatori Silicon Photomultiplier (SiPM) di area 6x6mm^{2} e sensibili a radiazione UV, prodotti da Fondazione Bruno Kessler (FBK). La meccanica e l'ele ... More
Presented by Valerio VAGELLI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
Searches for new heavy resonances decaying to WW, WZ, and ZZ bosons are presented, using Run-2 data of pp collisions at √s=13 TeV collected with the ATLAS detector at the LHC. The strategies of the analyses are overviewed, searching for a narrow-width resonance with mass between 500 and 5000 GeV. Three benchmark models are tested: a model predicting the existence of a new heavy scalar singlet, a ... More
Presented by Konstantinos BACHAS on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
L’utilizzo di fotomoltiplicatori al silicio (SiPM) in applicazioni che richiedono alta sensibilità e ottima risoluzione temporale nella rivelazione di fotoni con basse intensità di radiazione è ampiamente diffuso e divenuto uno standard negli ultimi anni. L’Istituto Nazionale di Fisica Nucleare è coinvolto in un progetto di ricerca e sviluppo in collaborazione con la Fondazione Bruno Kessl ... More
Presented by Luca TOSTI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
È possibile ipotizzare che il debole accoppiamento tra materia oscura e materia ordinaria sia attribuibile all’esistenza di portali che collegano il cosiddetto dark sector al settore visibile. Il modello più semplice in cui si realizza quest’ipotesi utilizza una simmetria di gauge U(1), cui è associato un bosone vettore A', ovvero il dark photon (DP): esso genererebbe interazioni simili a q ... More
Presented by Gabriele PIPERNO on 19 Apr 2017 at 12:35
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
I rivelatori basati su tecnologia gem (gas elettron multipliers) sono largamente usati negli esperimenti di fisica delle alte energie. La capacità di sostenere alte rate, l'ottima risoluzione spaziale, l'elevata risoluzione temporale e l'efficienza prossima al 100% che li caratterizzano, ne fanno i candidati ideali per l'upgrade della regione ad alta pseudo rapidità dell'esperimento CMS. Attorno ... More
Presented by Elisabetta SOLDANI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Large arrays of aligned carbon nanotubes (CNTs), open at one end, could be used as target material for the directional detection of weakly interacting dark matter particles (WIMPs). As a result of a WIMP elastic scattering on a CNT, a carbon ion might be injected in the body of the array and propagate through multiple collisions within the lattice. The ion may eventually emerge from the surface w ... More
Presented by Vasile Cristian ANTOCHI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
The NA62 is a fixed target experiment located at CERN Super Proton Synchrotron (SPS). The main experiment goal is to measure the K+→π+νν ̄with 10% of accuracy. This decay is a neutral weak current with a quark flavor violation highly suppressed by the GIM mechanism. Its branching ratio is predicted by the Standard Model with unusual precision (estimated to 8.4x10-11). In order to measure thi ... More
Presented by Marco BORETTO on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
The main goal of the Extreme Energy Events (EEE) Project is to study the high energy cosmic radiation. This is accomplished through a network of about 50 muon telescopes distributed throughout the Italian territory. Each telescope consists of three Multigap Resistive Plate Chambers (MRPC) -very similar to those built for the Time Of Flight system of the ALICE experiment- used for particle detectio ... More
Presented by Ms. Maria Paola PANETTA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The Resistive Plate Chamber (RPC) detector front-end for high rate experiments is being developed. A mixed technology in Silicon and Silicon-Germanium is used in order to enhance its performances: a preamplifier in Silicon with a very low inner noise (1000 e- rms) and a new kind of discriminator in SiGe technology with a threshold of the order of 1 mV. The main feature of this new kind of front-en ... More
Presented by Luca PIZZIMENTO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
To cope with the rate and radiation environment expected at the HL-LHC new approaches are being developed on CMOS pixel detectors, providing charge collection in a depleted layer. They are based on: HV-enabling technologies that allow to use high depletion voltages (HV-MAPS), high-resistivity wafers for large depletion depths (HR-MAPS); radiation-hard processes with multiple nested wells to allow ... More
Presented by Prof. Attilio ANDREAZZA on 20 Apr 2017 at 11:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
A new kind of particle detector based on Resistive Plate Chamber structure is under development. Semi-Conductive electrodes with resistivity up to 10^8 Ω∙cm are introduced to improve Rate Capability performance. The aim is to obtain a radiation hard detector with sub-nanosecond time resolution capable of working in high rate environment (order of MHz/cm2). In this presentation some results on t ... More
Presented by Alessandro ROCCHI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Intensita'
Track: Sessione Frontiera Intensità
L’esperimento BESIII (Beijing Spectrometer III) è ospitato presso il collisionatore a fasci leptonici BEPCII (Beijing Electron Positron Collider II), presso l’Istituto di Fisica delle Alte Energie (Institute of High Energy Physics – IHEP) di Pechino, in Cina. Nel 2016 BEPCII ha raggiunto la luminosità istantanea di progetto di 10^33 cm^-2 s^-1, fissando un nuovo limite per i collisionatori ... More
Presented by Giulio MEZZADRI on 21 Apr 2017 at 12:30
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Energia
The study of single and multi-strange particle production plays an important role in the investigation of the hot and dense QCD matter created in ultra-relativistic nucleus-nucleus collisions. In the central barrel of the ALICE detector, K0s, Λ, Ξ and Ω can be reconstructed from their weak decay topology. The measured yields and ratios (Λ/K0s and hyperon-to-pion) will be presented for the thre ... More
Presented by Domenico COLELLA on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Frontiera Intensità
La violazione di Universalità Leptonica costituirebbe un indizio di fisica oltre il Modello Standard. I decadimenti semileptonici dei mesoni beauty in leptoni di terza generazione sono di particolare interesse, dato che sono state osservate anomalie nella misura dei loro Branching Ratio. Vengono presentate le misure dell’osservabile $R(D^*) = \mathcal{B}(B^0 \to D^{*-}\tau^+\nu_\tau)/\mathcal{B ... More
Presented by Federico BETTI on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
AMS-02 (Alpha Magnetic Spectrometer) è uno spettrometro magnetico realizzato per lo studio di precisione della composizione e dello spettro energetico dei raggi cosmici (RC) dal GeV al TeV. Installato il 19 Maggio 2011 sulla Stazione Spaziale Internazionale, continua ininterrottamente da allora la sua presa dati raccogliendo circa 10 miliardi di particelle per anno. Grazie alla grande accettanza, ... More
Presented by Dr. Valerio FORMATO on 19 Apr 2017 at 17:20
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The measurement of time plays a fundamental role in many physics experiments. The TDC, Time to Digital Converter, is a device that returns a time interval every time the there's two input pulses. This device can be applied in many physics experiments because we are can convert physical events in pulses so as to measure the time between two pulses. In the data output from the TDC they are present ... More
Presented by Salvatore BRUNO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
The CALorimetric Electron Telescope (CALET) is a Japanese led international space mission by JAXA (Japanese AeroSpace Agency) in collaboration with the Italian Space Agency (ASI) and NASA. The apparatus was launched to the International Space Station on 19 August 2015. Its main objective is to explore the region above 1 TeV with precise direct measurements of the electron+positron spectrum, nuclei ... More
Presented by Lorenzo PACINI on 19 Apr 2017 at 17:55
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
The WRM (Weighting Resistive Matrix) is a conceptually simple device born for triggering tracks from beam-beam interaction experiments. Cause of its passive nature, is possible to perform track recognition with a time transition in about 10ns from digital inputs. The study and development of this device has brought to a theorization of a WRM able to elaborate analog inputs with highest measuring p ... More
Presented by Alessandro CALTABIANO on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Frontiera Energia
Track: Sessione Frontiera Energia
Uno studio delle densità di pseudorapidità e delle distribuzioni di molteplicità misurate alle energie del Run 1 e 2 ad LHC sarà presentato, per i sistemi pp, p-Pb e Pb-Pb. I risultati di ALICE sono esposti per pseudorapidità centrali e, se disponibili, per un largo intervallo di pseudorapidità (-3.4 < eta < 5.0). La misura della produzione inclusiva di particelle cariche in iterazioni ad al ... More
Presented by Valentina ZACCOLO on 20 Apr 2017 at 17:55
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
AMS-02 (Alpha Magnetic Spectrometer) è uno spettrometro magnetico realizzato per lo studio di precisione della composizione e dello spettro energetico dei raggi cosmici (RC) dal GeV al TeV. È stato installato il 19 Maggio 2011 sulla Stazione Spaziale Internazionale ed è in continua presa dati da allora. Grazie alla grande accettanza e al lungo tempo di esposizione, AMS-02 è in grado di misurar ... More
Presented by Federico DONNINI on 19 Apr 2017 at 17:40
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
In models where the Dark Matter arises as a thermal relic of an early annihilation stage we can use the cosmological DM abundance to derive information on the DM mass. Thus it is crucial to compute thermal freeze-out abundance accurately. The importance of non-relativistic effects, like Sommerfeld enhancement, in the annihilation of DM particles has been recognized long time ago. In this talk I wi ... More
Presented by Dr. Andrea MITRIDATE on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Cosmologia e Astroparticelle
L’Alpha Magnetic Spectrometer (AMS-02) è uno spettrometro magnetico per la ricerca indiretta di materia oscura e la misura di precisione dei raggi cosmici ad energie tra il GeV e il TeV, operante sulla Stazione Spaziale Internazionale (ISS) dal 19 Maggio 2011. Concepito con le tecnologie utilizzate per gli esperimenti di fisica delle particelle agli acceleratori, è composto da più sotto-rivel ... More
Presented by Marta CRISPOLTONI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
Lo scopo dell’esperimento PADME, ospitato presso i Laboratori Nazionali di Frascati, è la ricerca del fotone oscuro (A') prodotto in reazioni di positroni su bersaglio $e^{+}\, e^{-}\rightarrow A'\,\gamma$, per mezzo della misura della massa mancante nello stato finale (A’ e/o i suoi figli non vengono rivelati). Conseguentemente la componente principale del rivelatore è il calorimetro elett ... More
Presented by Clara TARUGGI on 21 Apr 2017 at 17:00
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
A first prototype of a readout ASIC in CMOS 65 nm for a pixel detector at High Luminosity LHC is described. The pixel cell area is of 50x50 um2 and the matrix consists of 64x64 pixels. The chip was designed to guarantee high efficiency at extreme data rates for very low signals and with low power consumption. Two different analogue very-front-end designs, one synchronous and one asynchronous, were ... More
Presented by Ennio MONTEIL on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
La missione IXPE (acronimo di Imaging X-ray Polarimetry Explorer) è stata recentemente selezionata dalla NASA come la prossima missione spaziale del programma SMall EXplorer (SMEX), con lancio previsto a fine 2020 e durata di almeno tre anni. Al cuore dell'osservatorio, tre telescopi identici equipaggiati con rivelatori a gas altamente innovativi permetteranno di misurare con alta sensibilità l' ... More
Presented by Niccolò DI LALLA on 19 Apr 2017 at 18:10
Type: Oral contribution Session: Sessione Cosmologia e Astroparticelle
Track: Sessione Cosmologia e Astroparticelle
Since its discovery more than one hundred years ago, the origin of the cosmic-ray flux measured on Earth is still unknown: in order to explain the region under the knee, SNRs are usually addressed as cosmic accelerator candidates, even though no clear indication of PeV energies has been observed so far in such kind of sources. Recently, the Galactic Center region has been detected as a multi-TeV g ... More
Presented by Ms. Silvia CELLI on 20 Apr 2017 at 10:15
Type: Poster contribution Session: Archivio Poster
Track: Sessione Nuove Tecnologie
During the 2024-2025 shutdown, the Large Hadron Collider (LHC) will be upgraded to reach an instantaneous luminosity of up to 7×1034 cm-2 s-1 (phase-2 upgrade). ATLAS and CMS detectors will be deeply renewed to meet the new challenges: an average of 200 pile-up events in every bunch crossing and an integrated luminosity of 3000-4000 fb-1 over ten years or more. A first batch of new 3D pixel senso ... More
Presented by Mr. Roberto MENDICINO ON BEHALF OF THE INFN-FBK PHASE2 COLLABORATION. on 21 Apr 2017 at 17:00
Type: Oral contribution Session: Sessione Nuove Tecnologie
Track: Sessione Nuove Tecnologie
The slowing down of Moore’s law and the growing requirements of future HEP experiments with ever-increasing data rates pose important computational challenges for track reconstruction systems, encouraging the exploration of new methodologies. We propose that a significant benefit could come from making track reconstruction to happen transparently in specialized devices, as part of the detector r ... More
Presented by Giovanni PUNZI on 20 Apr 2017 at 11:40