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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.21969 |
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| _version_ | 1866915971564830720 |
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| author | Sherpa, Rinchen Sarkar, Anuvab Maity, Tarak Nath Dutta, Paramita Laha, Ranjan Das, Anirban |
| author_facet | Sherpa, Rinchen Sarkar, Anuvab Maity, Tarak Nath Dutta, Paramita Laha, Ranjan Das, Anirban |
| contents | Novel target materials with anisotropic response will play a key role in detecting low-mass dark matter in upcoming experiments. Bilayer graphene is one such material that has been proposed for the detection of sub-MeV mass dark matter particles via electronic excitations. In this work, we calculate scattering rate via a massive mediator in bilayer graphene. With an exposure as small as $\sim$ 0.5 mg-year, bilayer graphene can probe new regions of the parameter space. The anisotropic response function of bilayer graphene leads to a sidereal-day modulation in the scattering rate, depending on its orientation with respect to the Galactic dark matter wind. We find significant modulation in the scattering rate for sub-MeV mass dark matter, demonstrating bilayer graphene's promise for a future experiment. We hope that our work will motivate the community to investigate bilayer graphene as a novel target material, and that it may lead us to discover the particle nature of dark matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_21969 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Dive deeper with SUBMARINE: SUB-Mev dArk matter diRect detectIon using bilayer grapheNE Sherpa, Rinchen Sarkar, Anuvab Maity, Tarak Nath Dutta, Paramita Laha, Ranjan Das, Anirban High Energy Physics - Phenomenology Mesoscale and Nanoscale Physics High Energy Physics - Experiment Novel target materials with anisotropic response will play a key role in detecting low-mass dark matter in upcoming experiments. Bilayer graphene is one such material that has been proposed for the detection of sub-MeV mass dark matter particles via electronic excitations. In this work, we calculate scattering rate via a massive mediator in bilayer graphene. With an exposure as small as $\sim$ 0.5 mg-year, bilayer graphene can probe new regions of the parameter space. The anisotropic response function of bilayer graphene leads to a sidereal-day modulation in the scattering rate, depending on its orientation with respect to the Galactic dark matter wind. We find significant modulation in the scattering rate for sub-MeV mass dark matter, demonstrating bilayer graphene's promise for a future experiment. We hope that our work will motivate the community to investigate bilayer graphene as a novel target material, and that it may lead us to discover the particle nature of dark matter. |
| title | Dive deeper with SUBMARINE: SUB-Mev dArk matter diRect detectIon using bilayer grapheNE |
| topic | High Energy Physics - Phenomenology Mesoscale and Nanoscale Physics High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2604.21969 |