Limits for short-lived neutral particles emitted in μ+ or π+ decay
作者： R. Eichler , L. Felawka , N. Kraus , C. Niebuhr , H.K. Walter
DOI: 10.1016/0370-2693(86)90339-4
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摘要: Abstract In the data taken for μ + → e - and π ν experiments a search was made neutral particles φ produced in decay or νφ with subsequent . No candidates were found, Upper limits branching ratios are given as function of their masses lifetimes. For lifetimes below 10 −10 s down to 2 × −12 obtained.
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