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Marco Ciuchini (ROMA3)12/04/2012, 14:15Presentazione 20 minutiAn intense experimental activity in flavor physics is programmed for the next decade. I discuss why and how this activity could contribute to the global effort of going beyond the Standard Model.Go to contribution page
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Andrea Messina (ROMA1)12/04/2012, 14:35Fisica del Modello Standard e oltrePresentazione 20 minutiA preliminary combination of Standard Model Higgs boson searches with the ATLAS experiment, in a dataset corresponding to an integrated luminosity of 4.6 to 4.9 fb−1 of pp collision data collected at √s = 7 TeV at the LHC, is presented. A Standard Model Higgs boson is excluded at the 95% confidence level (CL) in the mass ranges from 110.0 GeV to 117.5 GeV, 118.5 GeV to 122.5 GeV, and 129...Go to contribution page
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Emanuele Di Marco (Caltech)12/04/2012, 14:55Fisica del Modello Standard e oltrePresentazione 20 minutiThe methods and results of the searches for the Standard Model scalar boson predicted by the Higgs mechanism will be described. The analysis is based on 5 fb-1 of proton-proton collision data collected with the CMS detector at LHC at 7 TeV centre-of-mass energy in 2011. The results of these searches exclude at 95% CL a large Higgs boson mass range. At low mass, between approximately the...Go to contribution page
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Federico Sforza (Sezione INFN e Universita' di Pisa)12/04/2012, 15:15Fisica del Modello Standard e oltrePresentazione 15 minutiWe present the result of the search for a low mass Higgs boson produced in association with a $W$ boson at a center-of-mass energy of $\sqrt{s}=$1.96~TeV with the CDF detectors at the Tevatron $p\bar{p}$ collider. The analysis is performed on the complete CDF dataset (9.4~fb$^{-1}$ of integrated luminosity) in events containing one lepton, transverse energy imbalance and two or three...Go to contribution page
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Dr Michela Biglietti (ROMA3)12/04/2012, 15:27Fisica del Modello Standard e oltrePresentazione 15 minutiWe report the recent results for the Standard Model Higgs Boson searches using 4.7 fb-1 of proton-proton collisions data at sqrt(s)=7TeV, recorded with the ATLAS detector at the Large Hadron Collider. The analysis considers decay channels H->WW->lvlv and H->WW->lvjj where l = (e or mu) with final states containing charged leptons, jets, and missing transverse energy. The event selection,...Go to contribution page
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Riccardo Manzoni (Milano Bicocca)12/04/2012, 15:45Fisica del Modello Standard e oltrePresentazione 12 minutiThe analysis performed on the data collected by CMS during 2011, has excluded at 95% CL the possible existence of a SM-like Higgs boson in most of the mass region that has been explored, except for a window from 110 to 128 Gev/c2 In the search for a light Higgs boson, the di- nal state plays a crucial role, thanks to its sizeable branching ratio and to the expected relatively low...Go to contribution page
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Alessandro Strumia (PI)12/04/2012, 15:55Presentazione 20 minutiI discuss implications of recent data that hints for an Higgs boson at 125 GeV for Higgs properties, for the meta-stability of the SM vacuum, and for supersymmetryGo to contribution page
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Mr Gianluca Blankenburg (Università Roma Tre - CERN)12/04/2012, 16:15Fisica del Modello Standard e oltrePresentazione 12 minutiGli esperimenti ATLAS e CMS a LHC hanno recentemente segnalato l'osservazione di un possibile eccesso di eventi corrispondenti ad una nuova particella h di massa circa 125 GeV che potrebbe essere il tanto cercato bosone di Higgs, o qualcos'altro. Per identificare la natura di questo possibile segnale bisognerà però studiare gli accoppiamenti di h e misurarli in modo più accurato possibile. In...Go to contribution page
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Giuseppe Bozzi (Università di Milano e INFN)12/04/2012, 16:55Fisica del Modello Standard e oltrePresentazione 20 minutiDopo una rassegna sui principali metodi di calcolo perturbativo utilizzati nello studio delle osservabili elettrodeboli ai collisori adronici, verranno presentati alcuni recenti risultati di fenomenologia della produzione di Higgs e Bosoni Vettori.Go to contribution page
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Roberto Tenchini (PI)12/04/2012, 17:15Fisica del Modello Standard e oltrePresentazione 20 minutiSi discute lo stato della fisica sperimentale del quark top, passando in rassegna alcuni risultati recenti. In particolare vengono presentate le misure della sezione d'urto di produzione di coppie ttbar e di top singolo in collisioni adroniche alle piu' alte energie. Si discutono inoltre le piu' recenti misure della massa del top ed il loro impatto sui test di precisione elettrodeboli. Vengono...Go to contribution page
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Dr Alberto Mengarelli (BOLOGNA)12/04/2012, 17:35Fisica del Modello Standard e oltrePresentazione 12 minutiIn this talk it is presented a measurement of the ZZ → llll production cross section performed by the ATLAS detector in LHC proton-proton collisions at sqrt(s)=7 TeV. Three ZZ decay channels are considered, eeee, eeμμ or μμμμ, including e or μ leptons produced in the τ decay of the Z’s. The results are based on an integrated luminosity of 4.7fb−1 collected by ATLAS in 2011 with a fully...Go to contribution page
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Andrea Schizzi (Trieste)12/04/2012, 17:45Fisica del Modello Standard e oltrePresentazione 12 minutiThe measurement of W and Z plus jets final states allows for stringent tests of perturbative QCD calculations in the contest of the Standard Model and is sensitive to the possible presence of new physics. A study of jet production in association with a vector boson in proton-proton collisions at a 7 TeV center-of-mass energy is presented, using data collected with the CMS detector. The...Go to contribution page
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Giacomo Polesello (PV)12/04/2012, 17:55Fisica del Modello Standard e oltrePresentazione 20 minutiThe ATLAS and CMS experiments have used the LHC data collected in 2011 to search for signals of physics beyond the Standard Model. We review the strategy adopted by the experiments, and summarize the main result with special emphasis on searches for supersymmetric models and on recent results based on the full 2011 statistics.Go to contribution page
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Francesco Romeo (Perugia)12/04/2012, 18:15Fisica del Modello Standard e oltrePresentazione 12 minutiA search for high mass resonances decaying into tau pairs is presented using a data sample of pp collisions at sqrt(s) = 7 TeV corresponding to an integrated luminosity of 5 fb−1 collected with the CMS detector at the LHC. The number of observed events is in good agreement with the standard model prediction so an upper limit on the resonance producion cross section is calculated.Go to contribution page
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Elisa Guido (GE)12/04/2012, 18:25Fisica del Modello Standard e oltrePresentazione 15 minutiWe report on the search for charged long-lived heavy particles, predicted by several theories beyond the Standard Model. Such particles are potentially detectable at the LHC, given either their anomalous dE/dx loss measurable in the ATLAS Pixel detector, or their slow motion (beta<1) which can be detected by the Tile Calorimeter, or even their possible muon-likeness identified by the...Go to contribution page
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