RESOLVING AMBIGUITY IN CP-VIOLATION PARAMETERS

被引:24
作者
HARRIS, GR [1 ]
ROSNER, JL [1 ]
机构
[1] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637
来源
PHYSICAL REVIEW D | 1992年 / 45卷 / 03期
关键词
D O I
10.1103/PhysRevD.45.946
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using present data on charmless B-meson decays, B-BBAR mixing, and CP-violating K-KBAR mixing, and the constraint m(t) = 140 +/- 40 GeV/c2 derived from a fit to electroweak data, we extract a value of f(B) (the B-meson decay constant), and obtain corresponding regions of parameters for elements of the Cabibbo-Kobayashi-Maskawa matrix. Two solutions are found: one with f(B) almost-equal-to f(pi) (similar to values obtained in potential models) and the other with f(B) almost-equal-to 1.7f(pi) (closer to the large values favored in recent lattice calculations). Prospects for resolving the ambiguity via measurements of the B --> tau-nu and K+ --> pi+-nu-nu-BAR branching ratios, B(s)-B(s)BAR mixing, CP violation in B --> J/psi-K(S) and B --> pi-pi, and epsilon'/epsilon in the kaon system are discussed.
引用
收藏
页码:946 / 952
页数:7
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