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- Title
Solar active-sterile neutrino conversion with atomic effects at dark matter direct detection experiments.
- Authors
Ge, Shao-Feng; Pasquini, Pedro; Sheng, Jie
- Abstract
The recent XENON1T excess can be explained by the solar active-sterile neutrino conversion with bound electrons via light mediator. Nevertheless, the atomic effects are usually omitted in the solar neutrino explanations. We systematically establish a second quantization formalism for both bound and ionized electrons to account for the atomic effects. This formalism is of great generality to incorporate various interactions for both neutrino and dark matter scatterings. Our calculation shows that the change in the cross section due to atomic effects can have important impact on the differential cross section. It is necessary to include atomic effects in the low-energy electron recoil signal at dark matter direct detection experiments even for energetic solar neutrinos. With the best-fit values to the XENON1T data, we also project the event rate at PandaX-4T, XENONnT, and LZ experiments.
- Subjects
SOLAR neutrinos; NEUTRINOS; DARK matter; NEUTRINO interactions; DIFFERENTIAL cross sections
- Publication
Journal of High Energy Physics, 2022, Vol 2022, Issue 5, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP05(2022)088