Search for massive neutrinos in the decay pi -> e nu

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TR Number
Date
2011-09-06
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract

Evidence of massive neutrinos in the pi(+) -> e(+)nu decay spectrum was sought with the background pi(+) -> mu(+) -> e(+) decay chain highly suppressed. Upper limits (90% C. L.) on the neutrino mixing matrix element vertical bar U(ei)vertical bar(2) in the neutrino mass region 60-129 MeV/c(2) were set at the level of 10(-8).

Description
Keywords
branching ratio, Astronomy & Astrophysics, Physics
Citation
Aoki, M. ; Blecher, M. ; Bryman, D. A. ; et al., SEP 6 2011. “Search for massive neutrinos in the decay pi -> e nu,” PHYSICAL REVIEW D 84(5): 052002. DOI: 10.1103/PhysRevD.84.052002