Discovery potential of FASER$\nu$ with contained vertex and through-going events

Abstract

FASER$\nu$ is a newly proposed detector whose main mission is to detect the neutrino flux from the collision of the proton beams at the ATLAS Interaction Point (IP) during the run III of the LHC in 2022-2024. We show that this detector can also test certain beyond standard model scenarios, especially the ones in which the neutrino interaction with matter fields can produce new unstable particles decaying back into charged leptons. Models of this kind are motivated by the MiniBooNE anomaly. We show that, if the new physics involves multi-muon production by neutrinos scattering off matter fields, including the neutrino flux interactions in the rock before the detector in the analysis ({\it i.e.,} accounting for the through-going muon pairs) can significantly increase the effective detector mass and its sensitivity to new physics. We propose a concrete model that can give rise to such a multi-muon signal.

28 pages, 3 figures

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• New parton distributions for collider physics
• LHAPDF6: parton density access in the LHC precision era
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Cited by in corpus (14)

• The Forward Physics Facility: Sites, Experiments, and Physics Potential
• Snowmass White Paper: Beyond the Standard Model effects on Neutrino Flavor
• EFT at FASER$\nu$
• Neutrino beam-dump experiment with FASER at the LHC
• Searches for new physics at SND@LHC
• Investigating the fluxes and physics potential of LHC neutrino experiments
• Non-standard Neutrino and $Z^{\prime }$ Interactions at the FASER$\nu$ and the LHC
• Probing for chiral $Z^{\prime }$ gauge boson through scattering measurement experiments
• Testing electroweak scale seesaw models at $e^{-}\gamma$ and $\gamma \gamma$ colliders
• Neutral Exotica at FASER$\nu$ and SND@LHC
• Leptoquark search at the Forward Physics Facility
• Sensitivities on dark photon from the Forward Physics Experiments
• The Forward Physics Facility at the High-Luminosity LHC
• Excess of Tau events at SND@LHC, FASER$\nu$ and FASER$\nu$2