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Dark Photon from Light Scalar Boson Decays at FASER

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arxiv 2008.12765 v4 pith:OJDGES4O submitted 2020-08-28 hep-ph hep-ex

Dark Photon from Light Scalar Boson Decays at FASER

classification hep-ph hep-ex
keywords darkphotonscalarbosonbreakingdecaysfasergauge
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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FASER is one of the promising experiments which search for long-lived particles beyond the Standard Model. In this paper, we focus on dark photon associating with an additional U(1) gauge symmetry, and also a scalar boson breaking this U(1) gauge symmetry. We study the sensitivity to the dark photon originated from U(1)-breaking scalar decays. We find that a sizable number of dark photon signatures can be expected in wider parameter space than previous studies.

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Cited by 1 Pith paper

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  1. Dark Photons from Perturbative Decay of a Misaligned Higgs Field

    hep-ph 2026-07 conditional novelty 6.0

    Stochastically misaligned dark Higgs decay into dark photons can make all the dark matter for m_A′ ≈ 100 eV–1 GeV and g ≈ 10^-15–10^-10, shrinking to 10 keV–1 MeV with one-loop kinetic mixing.