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Upper bound on neutrino mass based on T2K neutrino timing measurements

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BORIS DOI
10.7892/boris.82775
Date of Publication
February 25, 2015
Publication Type
Article
Division/Institute

Physikalisches Instit...

Author
Ariga, Akitakaorcid-logo
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Ereditato, Antonio
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Göldi, Damian
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Hierholzer, Martin
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Nirkko, Martti
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Pistillo, Ciroorcid-logo
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Redij, Asmita Ajit
Physikalisches Institut, Laboratorium für Hochenergiephysik (LHEP)
Subject(s)

500 - Science::530 - ...

Series
Physical review. D - particles, fields, gravitation, and cosmology
ISSN or ISBN (if monograph)
1550-7998
Publisher
American Physical Society
Language
English
Publisher DOI
10.1103/PhysRevD.93.012006
Description
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 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^2 < 5.6 MeV^2/c^4.
Handle
https://boris-portal.unibe.ch/handle/20.500.12422/142368
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File(s)
FileFile TypeFormatSizeLicensePublisher/Copright statementContent
PhysRevD.93-1.pdftextAdobe PDF1.35 MBpublisherpublished restricted
1502.06605v1.pdftextAdobe PDF3.09 MBpublishersubmittedOpen
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