Improved search for heavy neutrinos in the decay π→eν

Aguilar-Arevalo, A. et al. (2018) Improved search for heavy neutrinos in the decay π→eν. Physical Review D, 97(7), 072012. (doi: 10.1103/PhysRevD.97.072012)

Abstract

A search for massive neutrinos has been made in the decay π+→e+ν. No evidence was found for extra peaks in the positron energy spectrum indicative of pion decays involving massive neutrinos (π→e+νh). Upper limits (90% C.L.) on the neutrino mixing matrix element |Uei|2 in the neutrino mass region 60–135 MeV/c2 were set and are an order of magnitude improvement over previous results.

• Item Type: Articles
• Additional Information: This work was supported by the Natural Sciences and Engineering Research Council of Canada and TRIUMF through a contribution from the National Research Council of Canada and by Research Fund for Doctoral Program of Higher Education of China and was partially supported by KAKENHI (Grants No. 18540274 and No. 21340059) in Japan. M. B. was supported by US National Science Foundation Grant No. Phy-0553611.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Protopopescu, Dr Dan and Britton, Professor David
• Authors: Aguilar-Arevalo, A., Aoki, M., Blecher, M., Britton, D.I., vom Bruch, D., Bryman, D.A., Chen, S., Comfort, J., Cuen-Rochin, S., Doria, L., Gumplinger, P., Hussein, A., Igarashi, Y., Ito, S., Kettell, S., Kurchaninov, L., Littenberg, L.S., Malbrunot, C., Mischke, R.E., Numao, T., Protopopescu, D., Sher, A., Sullivan, T., and Vavilov, D.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review D
• Publisher: American Physical Society
• ISSN: 2470-0010
• ISSN (Online): 2470-0029
• Copyright Holders: Copyright © 2018 American Physical Society
• First Published: First published in Physical Review D 97(7):072012
• Publisher Policy: Reproduced under a Creative Commons License

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