SENSEI: A Search for Diurnal Modulation in sub-GeV Dark Matter Scattering
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arXiv
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| Natura: | Preprint |
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2025
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| author | Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Sofo-Haro, Miguel Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Winkel, Federico Wu, Yikai Yu, Tien-Tien Bertou, Xavier |
| author_facet | Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Sofo-Haro, Miguel Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Winkel, Federico Wu, Yikai Yu, Tien-Tien Bertou, Xavier |
| contents | Dark matter particles with sufficiently large interactions with ordinary matter can scatter in the Earth's atmosphere and crust before reaching an underground detector. This Earth-shielding effect can induce a directional dependence in the dark matter flux, leading to a sidereal daily modulation in the signal rate. We perform a search for such a modulation using data from the SENSEI experiment, targeting MeV-scale dark matter. We achieve an order-of-magnitude improvement in sensitivity over previous direct-detection bounds for dark-matter masses below 1 MeV, assuming the Standard Halo Model with a Maxwell--Boltzmann velocity distribution, and constrain the amplitude of a general daily modulation signal to be below 6.8 electrons per gram per day. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20889 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SENSEI: A Search for Diurnal Modulation in sub-GeV Dark Matter Scattering Bloch, Itay M. Botti, Ana M. Cababie, Mariano Cancelo, Gustavo Cervantes-Vergara, Brenda A. Daal, Miguel Desai, Ansh Drlica-Wagner, Alex Essig, Rouven Estrada, Juan Etzion, Erez Moroni, Guillermo Fernandez Holland, Stephen E. Kehat, Jonathan Lawson, Ian Luoma, Steffon Orly, Aviv Perez, Santiago E. Rodrigues, Dario Saffold, Nathan A. Scorza, Silvia Sofo-Haro, Miguel Stifter, Kelly Tiffenberg, Javier Uemura, Sho Villalpando, Edgar Marrufo Volansky, Tomer Winkel, Federico Wu, Yikai Yu, Tien-Tien Bertou, Xavier High Energy Physics - Experiment Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology Dark matter particles with sufficiently large interactions with ordinary matter can scatter in the Earth's atmosphere and crust before reaching an underground detector. This Earth-shielding effect can induce a directional dependence in the dark matter flux, leading to a sidereal daily modulation in the signal rate. We perform a search for such a modulation using data from the SENSEI experiment, targeting MeV-scale dark matter. We achieve an order-of-magnitude improvement in sensitivity over previous direct-detection bounds for dark-matter masses below 1 MeV, assuming the Standard Halo Model with a Maxwell--Boltzmann velocity distribution, and constrain the amplitude of a general daily modulation signal to be below 6.8 electrons per gram per day. |
| title | SENSEI: A Search for Diurnal Modulation in sub-GeV Dark Matter Scattering |
| topic | High Energy Physics - Experiment Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.20889 |