Dark photon and U(1)$_{B-L}$ gauge boson from dark Higgs boson decays at FASER and SHiP

Fuente: arXiv
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Auteurs principaux: Araki, Takeshi, Asai, Kento, Nakashima, Yohei, Seto, Osamu, Shimomura, Takashi, Uchida, Yoshiki
Format: Preprint
Publié: 2026
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author Araki, Takeshi
Asai, Kento
Nakashima, Yohei
Seto, Osamu
Shimomura, Takashi
Uchida, Yoshiki
author_facet Araki, Takeshi
Asai, Kento
Nakashima, Yohei
Seto, Osamu
Shimomura, Takashi
Uchida, Yoshiki
contents We study the sensitivity to dark photons and U(1)$_{B-L}$ gauge bosons produced via dark Higgs boson decays at the FASER and SHiP experiments. In addition to pair production of these vector bosons from both on-shell and off-shell dark Higgs boson decays, a new production process of single vector boson associated with the standard model particles is taken into account. Constraints on the parameter space of dark photon are derived with including the latest results from the FASER experiment. The expected sensitivity regions to the dark photon and U(1)$_{B-L}$ gauge boson of the future FASER2 and SHiP experiments are presented. The sensitivity to the U(1)$_{B-L}$ model with freeze-in sterile neutrino dark matter is also discussed.
format Preprint
id arxiv_https___arxiv_org_abs_2603_28882
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Dark photon and U(1)$_{B-L}$ gauge boson from dark Higgs boson decays at FASER and SHiP
Araki, Takeshi
Asai, Kento
Nakashima, Yohei
Seto, Osamu
Shimomura, Takashi
Uchida, Yoshiki
High Energy Physics - Phenomenology
High Energy Physics - Experiment
We study the sensitivity to dark photons and U(1)$_{B-L}$ gauge bosons produced via dark Higgs boson decays at the FASER and SHiP experiments. In addition to pair production of these vector bosons from both on-shell and off-shell dark Higgs boson decays, a new production process of single vector boson associated with the standard model particles is taken into account. Constraints on the parameter space of dark photon are derived with including the latest results from the FASER experiment. The expected sensitivity regions to the dark photon and U(1)$_{B-L}$ gauge boson of the future FASER2 and SHiP experiments are presented. The sensitivity to the U(1)$_{B-L}$ model with freeze-in sterile neutrino dark matter is also discussed.
title Dark photon and U(1)$_{B-L}$ gauge boson from dark Higgs boson decays at FASER and SHiP
topic High Energy Physics - Phenomenology
High Energy Physics - Experiment
url https://arxiv.org/abs/2603.28882