Constraints on neutrino decay lifetime using long-baseline charged and neutral current data
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Data
2015-01
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Resumo
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 α3. The MINOS charged and neutral current data analysis results in the best fit for | m232| =2.34 ×10−3eV2, sin2θ23=0.60and 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 τ3/m3>2.8 ×10−12s/eV. This is the best limit based only on accelerator produced neutrinos.
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Neutrino, Neutrino decay, Neutrino oscillation
Citação
GOMES, R. A.; GOMES, A. L. G.; PERES, O. L. G. Constraints on neutrino decay lifetime using long-baseline charged and neutral current data. Physics Letters B, New York, v. 740, p. 345-352, Jan. 2015.