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

被引：170

作者：

BRITTON, DI

AHMAD, S

BRYMAN, DA

BURNHAM, RA

CLIFFORD, ETH

KITCHING, P

KUNO, Y

MACDONALD, JA

NUMAO, T

OLIN, A

POUTISSOU, JM

DIXIT, MS

机构：

[1] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

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

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.68.3000

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new measurement of the pi+ --> e+ nu-branching ratio gives R(pi-e-nu) = GAMMA(pi --> e-nu + pi --> e-nu-gamma)/GAMMA(pi --> mu-nu) + pi --> mu-nu-gamma) = [1.2265 +/- 0.0034(stat) +/- 0.0044(syst)] 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：3000 / 3003

页数：4

共 23 条

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