Search for finite-mass neutrinos in the decay <span class="math"><math><mtext>π</mtext><msup><mi></mi><mn>+</mn></msup><mtext>→</mtext><mtext>μ</mtext><msup><mi></mi><mn>+</mn></msup><mtext>v</mtext><msub><mi></mi><mn>μ</mn></msub></math></span>期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Search for finite-mass neutrinos in the decay $π^{+} → μ^{+} v_{μ}$

Authors:	FP Calaprice DF Schreiber MB Schneider M Green RE Pollock

Institution:	Department of Physics, Joseph Henry Laboratories, Princeton University, Princeton, NJ 08544, USA;Department of Physics, Indiana University, Bloomington, IN 47405, USA

Abstract:	If neutrinos possess non-zero mass, pion decay might have small decay branches to neutrino states with large masses. We have searched for such branches in the decay of pions produced at the Indiana University Cyclotron. The energy spectrum of decay muons shows no evidence for such neutrino branches and if these decays do exist, their branching ratios must be less than 10^?2 to 10^?3 for neutrino masses in the ranFge 7–33 MeV.

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