Authors: Ivan Girardi Davide Melon Tommy Ohlsson He Zhang Shun Zhou
Publish Date: 2014/08/08
Volume: 2014, Issue: 8, Pages: 57-
Abstract
Models of neutrino mixing involving one or more sterile neutrinos have resurrected their importance in the light of recent cosmological data In this case reactor antineutrino experiments offer an ideal place to look for signatures of sterile neutrinos due to their impact on neutrino flavor transitions In this work we show that the highprecision data of the Daya Bay experiment constrain the 3+1 neutrino scenario imposing upper bounds on the relevant activesterile mixing angle sin2 2θ 14 ≲ 006 at 3σ confidence level for the masssquared difference Δm 41 2 in the range 10−3 10−1 eV2 The latter bound can be improved by six years of running of the JUNO experiment sin2 2θ 14 ≲ 0016 although in the smaller mass range Δm 41 2 ∈ 10−4 10−3 eV2 We have also investigated the impact of sterile neutrinos on precision measurements of the standard neutrino oscillation parameters θ 13 and Δm 31 2 at Daya Bay and JUNO θ 12 and Δm 21 2 at JUNO and most importantly the neutrino mass hierarchy at JUNO We find that except for the obvious situation where Δm 41 2 ≲ Δm 31 2 sterile states do not affect these measurements substantiallyThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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