LHC-friendly freeze-in dark matter via Higgs portal
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911105922629632 |
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| author | Yin, Xinyue Xu, Shuai Zheng, Sibo |
| author_facet | Yin, Xinyue Xu, Shuai Zheng, Sibo |
| contents | It is known that single-field freeze-in dark matter barely leaves footprints in dark matter direct detection and collider experiments. This situation can be altered in two-field context. In this work we propose a two-field freeze-in dark matter model through Higgs portal. The observed dark matter relic abundance is obtained by a decay of scalar mediator thermalized in the early Universe. While there is a lack of direct dark matter signals, the scalar mediator is in the reach of HL-LHC either through vector boson fusion or Mono-Z channel. Within allowed scalar mass window of 10-50 GeV, we use improved cuts to derive both $2σ$ exclusion and $5σ$ discovery limits, depending on the value of Higgs portal coupling. If verified, this scalar mediator signal allows us to infer the freeze-in dark matter. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_18721 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | LHC-friendly freeze-in dark matter via Higgs portal Yin, Xinyue Xu, Shuai Zheng, Sibo High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment It is known that single-field freeze-in dark matter barely leaves footprints in dark matter direct detection and collider experiments. This situation can be altered in two-field context. In this work we propose a two-field freeze-in dark matter model through Higgs portal. The observed dark matter relic abundance is obtained by a decay of scalar mediator thermalized in the early Universe. While there is a lack of direct dark matter signals, the scalar mediator is in the reach of HL-LHC either through vector boson fusion or Mono-Z channel. Within allowed scalar mass window of 10-50 GeV, we use improved cuts to derive both $2σ$ exclusion and $5σ$ discovery limits, depending on the value of Higgs portal coupling. If verified, this scalar mediator signal allows us to infer the freeze-in dark matter. |
| title | LHC-friendly freeze-in dark matter via Higgs portal |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.18721 |