Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2022)140
Keywords
Dark Matter at Colliders; New Light Particles
Categories
Funding
- JSPS KAKENHI [18K03651, 18H01210, 22K03622]
- MEXT KAKENHI [18H05543]
- Fundamental Research Funds for the Central Universities
- National Natural Science Foundation of China (NNSFC) [11905149]
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This paper investigates inelastic dark matter scenarios with a dark photon mediator and a dark Higgs boson. The sensitivity to the decays of the excited state into dark matter and charged particles at the FASER 2 experiment is analyzed. Two mass spectra are considered as illustrative examples, where the excited state can only be produced through the decay of the dark Higgs boson. It is shown that unprobed parameter region can be explored in fermion dark matter scenario for the illustrative mass spectra.
We consider inelastic dark matter scenarios with dark photon mediator and a dark Higgs boson. The dark Higgs boson spontaneously breaks the gauge symmetry associated with the dark photon, and gives the mass to the dark photon and the mass difference to dark particles. Such a dark Higgs boson can decay into the dark particles and hence can be another source of the dark particles at collider experiments. We analyze the sensitivity to decays of the excited state into the dark matter and charged particles at the FASER 2 experiment in fermion and scalar inelastic dark matter scenarios. We consider two mass spectra as illustrating examples in which the excited state can be produced only through the decay of dark Higgs boson. We show that unprobed parameter region can be explored in fermion dark matter scenario for the illustrating mass spectra.
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