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- Title
Constraints on general neutrino interactions with exotic fermion from neutrino-electron scattering experiments.
- Authors
Chen, Zikang; Li, Tong; Liao, Jiajun
- Abstract
The couplings between the neutrinos and exotic fermion can be probed in both neutrino scattering experiments and dark matter direct detection experiments. We present a detailed analysis of the general neutrino interactions with an exotic fermion and electrons at neutrino-electron scattering experiments. We obtain the constraints on the coupling coefficients of the scalar, pseudoscalar, vector, axialvector, tensor and electromagnetic dipole interactions from the CHARM-II, TEXONO and Borexino experiments. For the flavor-universal interactions, we find that the Borexino experiment sets the strongest bounds in the low mass region for the electromagnetic dipole interactions, and the CHARM-II experiment dominates the bounds for other scenarios. If the interactions are flavor dependent, the bounds from the CHARM-II or TEXONO experiment can be avoided, and there are correlations between the flavored coupling coefficients for the Borexino experiment. We also discuss the detection of sub-MeV DM absorbed by bound electron targets and illustrate that the vector coefficients preferred by XENON1T data are allowed by the neutrino-electron scattering experiments.
- Subjects
FERMIONS; NEUTRINOS; DIPOLE interactions; NEUTRINO scattering; NEUTRINO interactions; ELECTRON scattering; ELECTROMAGNETIC interactions
- Publication
Journal of High Energy Physics, 2021, Vol 2021, Issue 5, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP05(2021)131