CP-VIOLATION AND STRONG PHASES FROM PENGUINS IN B-+/--]VV-DECAYS

被引:116
作者
KRAMER, G
PALMER, WF
SIMMA, H
机构
[1] OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210
[2] DESY,D-22603 HAMBURG,GERMANY
关键词
D O I
10.1016/0550-3213(94)90192-9
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We calculate direct CP-violating observables in charged B --> VV decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order alpha(s) from absorptive parts of one-loop matrix elements of the next-to-leading logarithm corrected effective Hamiltonian. CPT constraints are maintained. Based on this model, we find that partial rate asymmetries between charge conjugate B-+/- decays can be as high as 15-30% for certain channels with branching ratios in the 10(-6) range. The small values of the coefficients of angular correlations, which we calculated previously to be of order 10(-2) are not significantly degraded by the strong phases. The charge asymmetries of rates and angular distributions would provide unambiguous evidence for direct CP violation.
引用
收藏
页码:77 / 97
页数:21
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