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Searches for new physics at SND@LHC

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arxiv 2104.09688 v2 pith:VQLP2V24 submitted 2021-04-19 hep-ph hep-ex

classification hep-phhep-ex
keywords fipsparticlesscatteringdetectdetectorfaserpotentialproduced
verification ladder T0 review T1 audit T2 compute T3 formal
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SND@LHC is an approved experiment equipped to detect scattering of neutrinos produced in the far-forward direction at the LHC, and aimed to measure their properties. In addition, the detector has a potential to search for new feebly interacting particles (FIPs) that may be produced in proton-proton collisions. In this paper, we discuss FIPs signatures at SND@LHC considering two classes of particles: stable FIPs that may be detected via their scattering, and unstable FIPs that decay inside the detector. We estimate the sensitivity of SND@LHC to probe scattering of leptophobic dark matter, and to detect decays of neutrino, scalar, and vector portal particles. Finally, we also compare and qualitatively analyze the potential of SND@LHC and FASER/FASER{\nu} experiments for these searches.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Direct Detection of Leptophobic Dark Matter with Electronic Collective Excitations

    hep-ph 2025-10 conditional novelty 6.0 of 10

    Leptophobic dark matter can excite plasmons in silicon through hadronic loops, and SENSEI data now constrain its nucleon cross section down to ~1e-31 cm^2 in the sub-MeV mass range.

  2. SND@LHC Upgrade for the High-Luminosity LHC: Physics Reach and Installation Scenarios

    hep-ex 2026-02 unverdicted novelty 4.0 of 10

    An alternative off-axis placement for the SND@LHC upgrade detector increases total neutrino interaction rate by a factor of five compared with the baseline position.

  3. Study of sub-GeV Dipolar Dark States at SND@LHC within Invisible Bounds on Meson Decays

    hep-ph 2026-01 conditional novelty 4.0 of 10

    SND@LHC could probe sub-GeV dark matter with electric/magnetic dipole moments in parts of parameter space not yet excluded, especially around 0.5 MeV in HL-LHC, but existing LEP and CHARM II bounds remain tighter in m...

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