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BEGIN:VEVENT
SUMMARY:Model-Building and Un-Naturalness
DTSTART:20181220T103000Z
DTEND:20181220T113000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36032@agenda.infn.it
DESCRIPTION:Speakers: Luca Vecchi (Lausanne)\n\nConventional solutions of
the hierarchy problem are severely constrained by direct and indirect sear
ches. All attempts to explain the EW scale naturally require very complica
ted and seemingly ad-hoc constructions. By accepting some amount of tuning
as a fact of Nature\, however\, these scenarios become very simple and at
tractive extensions of the SM. I will discuss how un-natural composite Hig
gs models represent compelling theories for flavor\, dark matter\, and (mo
st of) the hierarchy problem. I will also comment on novel realizations of
baryogenesis within un-natural scenarios.\n\nhttps://agenda.infn.it/event
/17256/contributions/36032/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36032/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Variation of alpha from a DM Force
DTSTART:20181219T103000Z
DTEND:20181219T113000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36033@agenda.infn.it
DESCRIPTION:Speakers: Pier Paolo Giardino (IFT Madrid)\n\nIn this talk I w
ill consider the possibility that the dark matter interacts with the Stand
ard Model (SM) through a feeble long range force $\\phi$. This scenario ha
s potentially interesting effects on the SM physics\, depending on the rad
ius and on the strength of the interaction. I will review some of these ef
fect\, concentrating in particular on the possibility that $\\phi$ directl
y affects the measured value of the fine structure constant.\n\nhttps://ag
enda.infn.it/event/17256/contributions/36033/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36033/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hints of new physics in flavour anomalies (and what meson mixing a
nd lifetimes can tell us)
DTSTART:20181218T090000Z
DTEND:20181218T100000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36034@agenda.infn.it
DESCRIPTION:Speakers: Matthew Kirk (INFN Roma)\n\nOver the last 5 years\,
there have been increasingly strong hints of something\namiss in flavour p
hysics. Starting with a small anomaly in a rare decay mode of B\nmesons\,
the current status amounts to a coherent set of discrepancies involving\nt
he non universality of decays to different flavour leptons - with a combin
ed\nsignificance of around 5 sigma.\nI will review the history of these fl
avour anomalies\, and what we mean by a\ncoherent EFT explanation. I will
introduce meson mixing and lifetimes and how they\nare calculated\, and th
en discuss how possible NP models that explain the anomalies\nare strongly
constrained by these calculations.\n\nhttps://agenda.infn.it/event/17256/
contributions/36034/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36034/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A realistic U(2) Model of Flavor
DTSTART:20181218T103000Z
DTEND:20181218T113000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36035@agenda.infn.it
DESCRIPTION:Speakers: Robert Ziegler (CERN)\n\nI will discuss a simple U(2
) model of flavor\, where all hierarchies in fermion masses and mixings ar
ise from powers of two small parameters. In contrast to previous U(2) mode
ls this setup can provide an excellent fit to all SM flavor observables in
cluding neutrinos\, and one naturally obtains large mixing in the lepton s
ector from small mixing in the quark sector. The model predicts an upper b
ound on the neutrino mass scale below current cosmological bounds\, and th
us is testable in the near future. This model can also be used to address
B-anomalies in the context of vector leptoquarks\, where the flavor struct
ure of the new couplings are connected to SM flavor hierarchies.\n\nhttps:
//agenda.infn.it/event/17256/contributions/36035/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36035/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Peccei-Quinn Symmetry as a Flavor Symmetry
DTSTART:20181220T150000Z
DTEND:20181220T160000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36036@agenda.infn.it
DESCRIPTION:Speakers: Fredrik Bjorkeroth (INFN LNF)\n\nThere has been rece
nt interest in possible connections between a Peccei-Quinn (PQ)\nsymmetry
and quark flavour structures. I describe how a generic\ngeneration-depende
nt U(1) symmetry acting on the quark Yukawa operators can reduce\nthe numb
er of free parameters in the quark sector. The maximal reduction\ncompatib
le with CP violation yields nine real parameters and one phase\, which\nma
tches the number of physical observables\, implying that such models have
no free\nparameters. This has several interesting consequences: (i) there
are only two\ninequivalent textures\, each one giving rise to six differen
t models depending on\nquark flavour assignments\, (ii) the U(1) symmetrie
s that generate these textures\nall have a QCD anomaly\, and hence are PQ
symmetries\, (iii) the resultant axion has\nflavour-violating couplings to
quarks\, which can be probed in meson decays\, (iv)\nin some cases the co
ntributions to the QCD anomaly of two generations cancels out\,\nopening u
p the possibility that the axion coupling to nucleons is strongly\nsuppres
sed.\n\nhttps://agenda.infn.it/event/17256/contributions/36036/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36036/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bounds on Dark Matter Annihilations from 21-cm data
DTSTART:20181218T133000Z
DTEND:20181218T143000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36037@agenda.infn.it
DESCRIPTION:Speakers: Paolo Panci (CERN)\n\nIn March 2018 the EDGES experi
ment has reported\, for the first time\, the discovery of an absorption fe
ature in the 21-cm spectrum at redshift around 17. This measurement\, if c
onfirmed\, is fundamental because can give us information about the epoch
of reionization soon after the formation of first stars and galaxies. This
talk is organised in three parts. In the first part I’ll present the ED
GES experiment and the procedure the collaboration has used to extract the
small 21-cm signal from very large foreground of diffuse galactic synchro
tron emission. Then I’ll review the physics of the 21-cm line and the hi
story of the InterGalactic Medium (IGM) properties assuming a LambdaCDM Un
iverse. Finally\, I’ll conclude with a simple application of this measur
ement to set bounds on the Dark Matter (DM) properties. In particular\, an
nihilating DM particles produce significant heating of the IGM erasing the
absorption feature measured by EDGES. These limits\, derived for the firs
t time in our paper\, are very strong and\, in some cases\, the most strin
gent in the literature.\n\nhttps://agenda.infn.it/event/17256/contribution
s/36037/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36037/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Beyond WIMPs at neutrino experiments: heavy and light Dark Matter
DTSTART:20181219T150000Z
DTEND:20181219T160000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36038@agenda.infn.it
DESCRIPTION:Speakers: Filippo Sala (DESY Hamburg)\n\nI will discuss two no
vel proposals to probe Dark Matter (DM) with existing and upcoming data.\n
1. DM lighter than a GeV is unavoidably accelerated by scatterings of cosm
ic-rays\, making it possible to detect it at experiments with large energy
thresholds and volumes\, like SuperKamiokande and DUNE. I will derive a n
ew limit from public data\, that turns out to be the strongest existing on
e in a wide region of parameter space\, and discuss search strategies at c
urrent and future neutrino experiments.\n2. Cosmic rays constitute our arg
uably unique direct access to energy domains of 10 TeV and above\, and a w
ealth of data is/will soon be delivered by current/near-future telescopes
(ANTARES\, IceCube\, KM3NeT\, but also HESSII\, CTA\, LHAASO\, CALET\,...)
. Heavy DM constitutes therefore an ideal BSM target for these experiments
: I will discuss the theory and phenomenology of DM models that evade chal
lenges like the so-called unitarity bound\, and propose related searches a
t such telescopes.\n\nhttps://agenda.infn.it/event/17256/contributions/360
38/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36038/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The dark side of neutron stars
DTSTART:20181219T133000Z
DTEND:20181219T143000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36039@agenda.infn.it
DESCRIPTION:Speakers: Luca Marzola (NICPB Tallin)\n\nI will try here to co
nvince you that neutron stars can be used as a laboratory to\ntest dark ma
tter candidates that deviate from the standard WIMP scenario. After\nintro
ducing toy models that lead to the formation of dark structures bounded to
\nneutron stars\, I will show how the presence of dark matter affects typi
cal neutron\nstars observables such as the mass-radius relation\, tidal de
formability and the\ngravitational wave spectrum emitted by neutron stars
mergers.\n\nhttps://agenda.infn.it/event/17256/contributions/36039/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36039/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A new Simplified Dark Matter Model: the Vector-like Portal
DTSTART:20181220T090000Z
DTEND:20181220T100000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36040@agenda.infn.it
DESCRIPTION:Speakers: Federica Giacchino (INFN LNF)\n\nThe nature of the D
ark Matter is a mystery not yet solved and its identification\nis a big ch
allenge for model builders and experimentalists. Among the plenthora of\np
ossible DM candidates\, the Weakly Interactive Massive Particle (WIMP) is
the most\npopular solution. In order to demonstrate that this is the valid
explanation to\nthe DM problem\, a non-gravitational signal and also a mo
del to interpret a\npossible DM message are needed. I will present a new S
implified Model\, called\nVector-like Portal\, which connects the hidden a
nd the visible sector through a\nVector-like fermion and promotes a real s
calar Dark Matter. I will show the main\nfeatures of model and its importa
nt consequences in the phenomenological analysis\nfor all three different
DM search strategies\, when it is coupled to leptons\, light\nand heavy qu
arks.\n\nhttps://agenda.infn.it/event/17256/contributions/36040/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36040/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Composite pNGB Dark Matter
DTSTART:20181220T133000Z
DTEND:20181220T143000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36041@agenda.infn.it
DESCRIPTION:Speakers: Ennio Salvioni (Munich Tech. U.)\n\nThe dark matter
(DM) could emerge along with the Higgs as a composite pseudo-Nambu-Goldsto
ne boson with decay constant f ~ TeV. This type of WIMP is especially inte
resting because its leading interaction with the Standard Model\, the deri
vative Higgs portal\, has the correct annihilation strength for thermal fr
eeze-out if the DM has weak-scale mass\, but is negligible in direct detec
tion experiments due to the very small momentum transfer. The explicit shi
ft symmetry breaking required to generate radiatively the DM mass\, howeve
r\, also introduces non-derivative DM interactions. I will discuss the ass
ociated phenomenology\, focusing on scenarios where the pattern of explici
t symmetry breaking naturally suppresses the direct detection cross sectio
n beyond the reach of current experiments.\n\nhttps://agenda.infn.it/event
/17256/contributions/36041/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36041/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Future probes of the Higgs boson
DTSTART:20181219T090000Z
DTEND:20181219T100000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36042@agenda.infn.it
DESCRIPTION:Speakers: Ramona Groeber (Humboldt U. Berlin)\n\nAfter the Hig
gs boson discovery the task in Higgs physics is now to probe \nthe Higgs
boson as precisely as possible to see if the Higgs sector shows\nany devia
tions from the Standard Model. In this talk I will discuss future probes\n
of the Higgs sector. I will mainly focus on Higgs pair production which\,
among\nother things\, allows to probe the trilinear Higgs self-coupling.\n
\nhttps://agenda.infn.it/event/17256/contributions/36042/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36042/
END:VEVENT
BEGIN:VEVENT
SUMMARY:New insights on the proton's structure
DTSTART:20181218T150000Z
DTEND:20181218T160000Z
DTSTAMP:20240329T094700Z
UID:indico-contribution-36043@agenda.infn.it
DESCRIPTION:Speakers: Marco Bonvini (INFN Roma)\n\nI will review the recen
t progress on the understanding the proton's\nstructure\, and specifically
the Parton Distribution Functions (PDFs) that describe\nthe longitudinal
momentum distributions of its constituents. I will mostly focus\non the in
clusion of the resummation of classes of logarithms in the theory adopted\
nfor their extraction from data. I will also comment on the phenomenologic
al impact\nat the LHC of these developments.\n\nhttps://agenda.infn.it/eve
nt/17256/contributions/36043/
LOCATION:High Energy Building\, S
eminar Room (1st floor) (
Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/17256/contributions/36043/
END:VEVENT
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