Conveners
Parallel Session BSM+DM
- LianTao Wang
Parallel Session BSM+DM
- Stephen Jacob Sekula (Southern Methodist University (US))
Parallel Session BSM+DM
- Rohini Godbole (Centre for Theoretical Studies (CTS))
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...
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 $\Lambda$ baryons, selected from weak decays of charm baryons produced in $pp$...
Direct dark matter searches are promising techniques to identify the nature of dark matter
particles. A variety of experiments have been developed over the past decades, aiming at
detecting Weakly Interactive Massive Particles (WIMPs) via their scattering in a detector
medium. Exploiting directionality would give a proof of the galactic origin of dark matter
making it possible to provide a...
The relaxion proposal is a new alternative to justify the smallness of the Higgs mass. The idea is to explain the radiative stability of the Higgs sector through the cosmological relaxation mechanism of the electroweak scale. Typically, in this framework, the effective Higgs mass is scanned by a scalar field (the relaxion) starting at some large value which slowly decreases during inflation....
We present a model of spontaneous (or dynamical) C and CP violation where it is possible to generate domains of matter and antimatter separated by cosmologically large distances. Such C(CP) violation existed only in the early universe and later it disappeared with the only trace of generated baryonic and/or antibaryonic domains. So the problem of domain walls in this model does not exist....
I will discuss the Zee model, a radiative neutrino mass model with possible large lepton flavor violating Higgs (HLFV) decays, in particular $h\rightarrow \tau \mu$. In the first part I will analyse the effective operators responsible for HLFV and their tree level UV completions. By imposing constraints from charged lepton flavour violating observables, like $\tau \rightarrow \mu \gamma$,...
We compare the sensitivity of precision measurements of lepton flavour observables to the reach of the LHC in a case study of lepton-flavour violating operators of dimension six with two leptons and two quarks, and operators of dimension eight with two leptons and two gluons. For light quarks precision measurements always yield the more stringent constraints. The LHC complements precision...
We report on a 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...
The total mass density of the Universe appears to be dominated by dark matter. However, beyond its gravitational interactions at the galactic scale, little is known about its nature. We have shown that a single optical atomic clock can be used as a detector for the hypothetical dark matter in the form of stable topological defects, for example, monopoles, strings or domain walls. We exploited...
The SABRE (Sodium Iodide with Active Background Rejection) experiment will search for an annually modulating signal from dark matter using an array of ultra-pure NaI(Tl) detectors surrounded by an active scintillator veto to further reduce the intrinsic background. The rate of interactions between DM particles and the detector is expected to modulate due to Earth’s changing velocity relative...
Dual-phase time-projection chambers based on noble gases are a very efficient particle detection technology which leads the field of dark matter searches. The XENON collaboration aims at a direct detection of dark matter with experiments based on liquid xenon.
The current step of the research program, the XENON1T experiment, is fully operational since May 2016 and is currently acquiring ...
EDELWEISS is an experiment dedicated to direct dark matter searches using high-purity germanium detectors equipped with a full charge and thermal signal readout. The detectors are operated at 18 mK in the underground laboratory of Modane, in the Frejus tunnel. Recent results on the spin-independent WIMP-nucleon cross-section for WIMP masses below 30 GeV for a fiducial exposure of 582kg.day...
Detecting Dark Matter (DM) particle is one of the most exciting experimental challenges of modern astroparticle physics. Many cosmological observations at different scales agree on the existence of DM ascribing 25$\%$ of the Universe's composition to it. In this context a variety of experiments have been performed in order to investigate the different possible DM candidates arising from...
