TY  - JOUR
AU  - Coloma, P.
AU  - Hernandez, P.
AU  - Muñoz, V.
AU  - Shoemaker, I. M.
PY  - 2020
DA  - 2020//
TI  - New constraints on heavy neutral leptons from Super-Kamiokande data
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 235
EP  - 7pp
VL  - 80
IS  - 3
PB  - Springer
AB  - Heavy neutral leptons are predicted in many extensions of the Standard Model with massive neutrinos. If kinematically accessible, they can be copiously produced from kaon and pion decays in atmospheric showers, and subsequently decay inside large neutrino detectors. We perform a search for these long-lived particles using Super-Kamiokande multi-GeV neutrino data and derive stringent limits on the mixing with electron, muon and tau neutrinos as a function of the long-lived particle mass. We also present the limits on the branching ratio versus lifetime plane, which are helpful in determining the constraints in non-minimal models where the heavy neutral leptons have new interactions with the Standard Model.
SN  - 1434-6044
UR  - https://arxiv.org/abs/1911.09129
UR  - https://doi.org/10.1140/epjc/s10052-020-7795-z
DO  - 10.1140/epjc/s10052-020-7795-z
LA  - English
N1  - WOS:000531858300005
ID  - Coloma_etal2020
ER  -