TY  - JOUR
AU  - T2K Collaboration (Abe, K. et al
AU  - Cervera-Villanueva, A.
AU  - Escudero, L.
AU  - Izmaylov, A.
AU  - Sorel, M.
AU  - Stamoulis, P.
PY  - 2016
DA  - 2016//
TI  - Upper bound on neutrino mass based on T2K neutrino timing measurements
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 012006
EP  - 15pp
VL  - 93
IS  - 1
PB  - Amer Physical Soc
AB  - The Tokai to Kamioka (T2K) long-baseline neutrino experiment consists of a muon neutrino beam, produced at the J-PARC accelerator, a near detector complex and a large 295-km-distant far detector. The present work utilizes the T2K event timing measurements at the near and far detectors to study neutrino time of flight as a function of derived neutrino energy. Under the assumption of a relativistic relation between energy and time of flight, constraints on the neutrino rest mass can be derived. The sub-GeV neutrino beam in conjunction with timing precision of order tens of ns provide sensitivity to neutrino mass in the few MeV/c(2) range. We study the distribution of relative arrival times of muon and electron neutrino candidate events at the T2K far detector as a function of neutrino energy. The 90% C.L. upper limit on the mixture of neutrino mass eigenstates represented in the data sample is found to be m(v)(2) < 5.6 MeV2/c(4).
SN  - 2470-0010
UR  - http://arxiv.org/abs/1502.06605
UR  - https://doi.org/10.1103/PhysRevD.93.012006
DO  - 10.1103/PhysRevD.93.012006
LA  - English
N1  - WOS:000369325800001
ID  - T2KCollaborationAbe_etal2016
ER  -