NATURE OF THE PI-NU-PI-W COUPLING

被引：107

作者：

BACINO, W

FERGUSON, T

NODULMAN, L

SLATER, WE

TICHO, HK

DIAMANTBERGER, A

DONALDSON, G

DURO, M

HALL, A

IRWIN, G

KIRKBY, J

MERRITT, F

WOJCICKI, S

BURNS, R

CONDON, P

COWELL, P

KIRZ, J

机构：

[1] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024

[2] STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305

[3] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305

[4] UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92664

[5] SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.42.749

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electron momentum spectrum observed in the decay is in good agreement with the V-A hypothesis. The measured value of the Michel parameter, =0.72 0.15, excludes a V+A current and disfavors pure V or A currents. The spectrum allows us to set an upper limit of 250 MeV/c2 (95% confidence level) for the neutrino mass. Finally, by measuring the -lifetime upper limit of 2.3×10-12 sec (95% confidence level), we show that the square of the coupling constant at the -W vertex is at least 12% of full weak strength. © 1979 The American Physical Society.

引用

页码：749 / 752

页数：4

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