Search for heavy neutrinos in pi > mu nu decay

Aguilar-Arevalo, A.; Aoki, M.; Blecher, M.; Britton, D.I.; vom Bruch, Bruch, D.; Bryman, D. A.; Chen, S.; Comfort, J.; Doria, L.; Cuen-Rochin, S.; Gumplinger, P.; Hussein, A.; Igarashi, Y.; Ito, S.; Kettell, S. H.; Kurchaninov, L.; Littenberg, L. S.; Malbrunot, C.; Mischke, R. E.; Numao, T.; Protopopescu, D.; Sher, A.; Sullivan, T.; Vavilov, D.

doi:10.1016/j.physletb.2019.134980

Permalink : https://ousar.lib.okayama-u.ac.jp/58120

ID	58120
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Author	Aguilar-Arevalo, A. Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico Aoki, M. Graduate School of Science, Osaka University, Blecher, M. Physics Department, Virginia Tech. Britton, D.I. School of Physics and Astronomy, University of Glasgow vom Bruch, Bruch, D. Department of Physics and Astronomy, University of British Columbia Bryman, D. A. Department of Physics and Astronomy, University of British Columbia Chen, S. Department of Engineering Physics, Tsinghua University Comfort, J. Physics Department, Arizona State University Doria, L. TRIUMF, 4004 Wesbrook Mall Cuen-Rochin, S. Department of Physics and Astronomy, University of British Columbia Gumplinger, P. TRIUMF, 4004 Wesbrook Mall Hussein, A. University of Northern British Columbia Igarashi, Y. KEK Ito, S. Graduate School of Science, Osaka University Kettell, S. H. Brookhaven National Laboratory Kurchaninov, L. TRIUMF, 4004 Wesbrook Mall Littenberg, L. S. Brookhaven National Laboratory Malbrunot, C. Department of Physics and Astronomy, University of British Columbia Mischke, R. E. TRIUMF, 4004 Wesbrook Mall Numao, T. TRIUMF, 4004 Wesbrook Mall Protopopescu, D. School of Physics and Astronomy, University of Glasgow Sher, A. TRIUMF, 4004 Wesbrook Mall Sullivan, T. Department of Physics and Astronomy, University of British Columbia Vavilov, D. TRIUMF, 4004 Wesbrook Mall
Abstract	In the present work of the PIENU experiment, heavy neutrinos were sought in pion decays pi(+) -> mu(+)nu at rest by examining the observed muon energy spectrum for extra peaks in addition to the expected peak for a light neutrino. No evidence for heavy neutrinos was observed. Upper limits were set on the neutrino mixing matrix vertical bar U-mu i vertical bar(2) in the neutrino mass region of 15.7-33.8 MeV/c(2), improving on previous results by an order of magnitude. (C) 2019 The Authors. Published by Elsevier B.V.
Keywords	Pion decay Heavy neutrino
Published Date	2019-11-10
Publication Title	Physics Letters B
Volume	volume798
Publisher	Elsevier
Start Page	134980
ISSN	0370-2693
Content Type	Journal Article
language	English
OAI-PMH Set	岡山大学
Copyright Holders	© 2019 The Authors.
File Version	publisher
DOI	10.1016/j.physletb.2019.134980
Web of Science KeyUT	000494939000018
Related Url	isVersionOf https://doi.org/10.1016/j.physletb.2019.134980
License	http://creativecommons.org/licenses/by/4.0/
Funder Name	Japan Society for the Promotion of Science
助成番号	18540274 21340059 24224006 19K03888