A facility to search for hidden particles at the CERN SPS: the SHiP physics case
Установка для поиска скрытых частиц на CERN SPS: физический кейс SHiP
2016-10-24
SCID: 54.1/pctxvwgd
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SHiP (Search for Hidden Particles)fixed target facility at CERN SPSportal interactions (scalar, vector, fermion, axion-like)tau neutrino physicsvery weakly interacting particles below the Fermi scale
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Abstract (AI)
This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (search for hidden particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC experiments, and to study tau neutrino physics. The same proton beam setup can be used later to look for decays of tau-leptons with lepton flavour number non-conservation, [Formula: see text] and to search for weakly-interacting sub-GeV dark matter candidates. We discuss the evidence for physics beyond the standard model and describe interactions between new particles and four different portals-scalars, vectors, fermions or axion-like particles. We discuss motivations for different models, manifesting themselves via these interactions, and how they can be probed with the SHiP experiment and present several case studies. The prospects to search for relatively light SUSY and composite particles at SHiP are also discussed. We demonstrate that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the standard model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.
Key Findings
1
SHiP can directly probe solutions to major beyond-standard-model puzzles, including neutrino masses, baryon asymmetry, dark matter, and inflation.
2
SHiP has discovery potential for relatively light SUSY and composite particles.
3
SHiP is a proposed fixed-target facility at the CERN SPS designed to search for very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC.
4
SHiP will also study tau neutrino physics using the same proton beam setup.
5
The facility can be later used to search for charged lepton flavour violation in tau decays and for weakly-interacting sub-GeV dark matter candidates.
6
The paper frames new particles interacting via four portals—scalars, vectors, fermions, and axion-like particles—and presents case studies how SHiP can probe these portals.
Research Object
The SHiP fixed-target facility / experiment at the CERN SPS
Research Subject
Searches for very weakly interacting particles below the Fermi scale and related new-physics signatures (hidden particles via scalar/vector/fermion/axion-like portals), tau neutrino physics, lepton-flavour-violating tau decays, and sub-GeV weakly-interacting dark matter discovery potential
Publication Details
Publication Date
2016-10-24
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