Search for massive neutrinos in {pi}{sup +}{implies}{mu}{sup +}{nu} decay
- TRIUMF, Vancouver, British Columbia (Canada) V6T 2A3
Evidence of massive neutrinos was sought in the {pi}{sup +}{implies}{mu}{sup +}{ital x} decay spectrum in the mass region {ital M}{sub {ital x}}=30{endash}33.91 MeV/{ital c}{sup 2}. Upper limits on the branching ratio {ital R}{sub {mu}}{sub {ital x}}{le}(4{endash}6){times}10{sup -}{sup 5} (90{percent} C.L.) were set for this region, which correspond to the neutrino mixing parameter {vert_bar}{ital U}{sub {mu}}{sub {ital x}}{vert_bar}{sup 2}{much_gt}10{sup -}{sup 3}{endash}10{sup -}{sup 4}. {copyright} {ital 1995 The American Physical Society.}
- OSTI ID:
- 253536
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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