Improved Limits on Sterile Neutrino Mixing from a Joint Search of the MINOS, MINOS+, Daya Bay, and Bugey-3 Experiments

Zhuojun Hu, Daya Bay and MINOS/MINOS+ collaborations
2021 Proceedings of 40th International Conference on High Energy physics — PoS(ICHEP2020)   unpublished
The Daya Bay, MINOS and MINOS+ experiments have searched for sterile neutrino mixing using electron antineutrino and muon (anti)neutrino disappearance, respectively, within a minimally extended four-neutrino scenario. They have recently combined their results, together with those from the Bugey-3 reactor neutrino experiment, to set the most stringent limits to date on the mixing angle over five orders of magnitude in the sterile mass-squared difference |Δ 2 41 |. The new constraints are
more » ... traints are significantly more stringent than the previous ones and exclude the sterileneutrino parameter space allowed by the LSND and MiniBooNE observations at 99% C.L.(CL s ) for |Δ 2 41 | < 1.2 eV 2 , weakening the interpretation of these observations by the presence of a sterile neutrino. The result of the joint Daya Bay, MINOS, MINOS+ and Bugey-3 search along with a brief overview of the searches done by each experiment is presented.
doi:10.22323/1.390.0201 fatcat:dg56qe7xdfabdn4iv2ugedelzm