Constraints on neutrino decay lifetime using long-baseline charged and neutral current data

Author(s)

Gomes, R. A. ^{[1, 2]} ; Gomes, A. L. G. ^[1] ; Peres, O. L. G. ^{[3, 4]}

Affiliation

^[1] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go - Brazil

^[2] Argonne Natl Lab, Argonne, IL 60439 - USA

^[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[4] Abdus Salaam Int Ctr Theoret Phys, Abdus Salam Int Ctr Theoret Phys, I-34010 Trieste - Italy

• Document type: Journal article
• Source: Physics Letters B; v. 740, p. 345-352, JAN 5 2015.
• Web of Science Citations: 23

Abstract

We investigate the status of a scenario involving oscillations and decay for charged and neutral current data from the MINOS and T2K experiments. We first present an analysis of charged current neutrino and anti-neutrino data from MINOS in the framework of oscillation with decay and obtain a best fit for non-zero decay parameter alpha(3). The MINOS charged and neutral current data analysis results in the best fit for vertical bar Delta m(32)(2)vertical bar = 2.34 x10(-3) eV(2), sin(2) theta(23) = 0.60 and zero decay parameter, which corresponds to the limit for standard oscillations. Our combined MINOS and T2K analysis reports a constraint at the 90% confidence level for the neutrino decay lifetime tau(3)/m(3) > 2.8 x 10(-12) s/eV. This is the best limit based only on accelerator produced neutrinos. (C) 2014 The Authors. Published by Elsevier B.V. (AU)

• FAPESP's process: 12/16389-1 - Neutrino phenomenology
• Grantee: Orlando Luis Goulart Peres
• Support type: Regular Research Grants