MEASUREMENT OF THE PI(+)-]E(+)NU BRANCHING RATIO

被引：71

作者：

BRITTON, DI ^{[1
]}

AHMAD, S ^{[1
]}

BRYMAN, DA ^{[1
]}

BURNHAM, RA ^{[1
]}

CLIFFORD, ETH ^{[1
]}

KITCHING, P ^{[1
]}

KUNO, Y ^{[1
]}

MACDONALD, JA ^{[1
]}

NUMAO, T ^{[1
]}

OLIN, A ^{[1
]}

POUTISSOU, JM ^{[1
]}

DIXIT, MS ^{[1
]}

机构：

[1] CARLETON UNIV,CTR RES PARTICLE PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

来源：

PHYSICAL REVIEW D | 1994年 / 49卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.49.28

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the pi+ --> e+nu branching ratio gives R(pienu) = GAMMA(pi --> enu + pi --> enugamma)/GAMMA(pi --> munu + pi --> munugamma) = 1.2265 +/- 0.0034(stat) +/- (0.0044(sys) x 10(-4). This result is in agreement with standard model calculations and confirms the hypothesis of electron-muon universality at the 0.2% level.

引用

页码：28 / 39

页数：12

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