Dark photon pair production via off-shell dark Higgs at FASER
Abstract We consider a dark photon model in which the dark U(1) gauge symmetry is spontaneously broken by a vacuum expectation value of a new scalar boson. We focus on the ForwArd Search ExpeRiment (FASER) and calculate its sensitivity to the dark photon produced from the off-shell decay of the new...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)124 |
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| _version_ | 1850075569415258112 |
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| author | Takeshi Araki Kento Asai Yohei Nakashima Takashi Shimomura |
| author_facet | Takeshi Araki Kento Asai Yohei Nakashima Takashi Shimomura |
| author_sort | Takeshi Araki |
| collection | DOAJ |
| description | Abstract We consider a dark photon model in which the dark U(1) gauge symmetry is spontaneously broken by a vacuum expectation value of a new scalar boson. We focus on the ForwArd Search ExpeRiment (FASER) and calculate its sensitivity to the dark photon produced from the off-shell decay of the new scalar boson. It is found that the off-shell production extends the sensitivity region beyond the kinematical threshold of the on-shell decay of the scalar boson, and that the sensitivity region can be spanned to unexplored region. We also show the parameter space in which perturbative calculation is valid for the unitarity of an S matrix. |
| format | Article |
| id | doaj-art-e6b2e1d6c79148369692c53dcaae2aa2 |
| institution | DOAJ |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-e6b2e1d6c79148369692c53dcaae2aa22025-08-20T02:46:16ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241212110.1007/JHEP12(2024)124Dark photon pair production via off-shell dark Higgs at FASERTakeshi Araki0Kento Asai1Yohei Nakashima2Takashi Shimomura3Faculty of Dentistry, Ohu UniversityInstitute for Cosmic Ray Research (ICRR), The University of TokyoDepartment of Physics, Kyushu UniversityFaculty of Education, Miyazaki UniversityAbstract We consider a dark photon model in which the dark U(1) gauge symmetry is spontaneously broken by a vacuum expectation value of a new scalar boson. We focus on the ForwArd Search ExpeRiment (FASER) and calculate its sensitivity to the dark photon produced from the off-shell decay of the new scalar boson. It is found that the off-shell production extends the sensitivity region beyond the kinematical threshold of the on-shell decay of the scalar boson, and that the sensitivity region can be spanned to unexplored region. We also show the parameter space in which perturbative calculation is valid for the unitarity of an S matrix.https://doi.org/10.1007/JHEP12(2024)124New Light ParticlesMulti-Higgs ModelsNew Gauge Interactions |
| spellingShingle | Takeshi Araki Kento Asai Yohei Nakashima Takashi Shimomura Dark photon pair production via off-shell dark Higgs at FASER Journal of High Energy Physics New Light Particles Multi-Higgs Models New Gauge Interactions |
| title | Dark photon pair production via off-shell dark Higgs at FASER |
| title_full | Dark photon pair production via off-shell dark Higgs at FASER |
| title_fullStr | Dark photon pair production via off-shell dark Higgs at FASER |
| title_full_unstemmed | Dark photon pair production via off-shell dark Higgs at FASER |
| title_short | Dark photon pair production via off-shell dark Higgs at FASER |
| title_sort | dark photon pair production via off shell dark higgs at faser |
| topic | New Light Particles Multi-Higgs Models New Gauge Interactions |
| url | https://doi.org/10.1007/JHEP12(2024)124 |
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