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Title: Detecting and studying high-energy collider neutrinos with FASER at the LHC

Journal Article · · European Physical Journal. C, Particles and Fields

Neutrinos are copiously produced at particle colliders, but no collider neutrino has ever been detected. Colliders produce both neutrinos and anti-neutrinos of all flavors at very high energies, and they are therefore highly complementary to those from other sources. FASER, the Forward Search Experiment at the LHC, is ideally located to provide the first detection and study of collider neutrinos. We investigate the prospects for neutrino studies with FASER$$ν$$ , a proposed component of FASER, consisting of emulsion films interleaved with tungsten plates with a total target mass of 1.2 t, to be placed on-axis at the front of FASER. We estimate the neutrino fluxes and interaction rates, describe the FASER$$ν$$ detector, and analyze the characteristics of the signals and primary backgrounds. For an integrated luminosity of 150 fb–1 to be collected during Run 3 of the 14 TeV LHC in 2021-23, approximately 1300 electron neutrinos, 20,000 muon neutrinos, and 20 tau neutrinos will interact in FASER$$ν$$, with mean energies of 600 GeV to 1 TeV. With such rates and energies, FASER will measure neutrino cross sections at energies where they are currently unconstrained, will bound models of forward particle production, and could open a new window on physics beyond the standard model.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); Heising-Simons Foundation; Simons Foundation; Japan Society for the Promotion of Science (JSPS); National Science Foundation (NSF); Gordon and Betty Moore Foundation; Science and Technology Facilities Council (STFC) (United Kingdom); Swiss National Science Foundation (SNF)
Contributing Organization:
FASER Collaboration
Grant/Contract Number:
SC0012704; SC0010008; AC02-76SF00515
OSTI ID:
1599290
Report Number(s):
BNL--213614-2020-JAAM
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 1 Vol. 80; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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