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
相关论文
共 45 条
[1]  
ALBRECHT H, 1990, Z PHYS C PART FIELDS, V48, P543, DOI 10.1007/BF01614687
[2]  
ALI A, ECFA WORKSHOP EUROPE, P42
[3]  
ALTARELLI G, 1993, 1992 P QCD 20 YEARS
[4]   CP NONINVARIANCE IN THE DECAYS OF HEAVY CHARGED QUARK SYSTEMS [J].
BANDER, M ;
SILVERMAN, D ;
SONI, A .
PHYSICAL REVIEW LETTERS, 1979, 43 (04) :242-245
[5]   THE DELTA-I = 1/2 RULE IN THE LARGE-N LIMIT [J].
BARDEEN, WA ;
BURAS, AJ ;
GERARD, JM .
PHYSICS LETTERS B, 1986, 180 (1-2) :133-140
[6]   EXCLUSIVE NONLEPTONIC DECAYS OF D-MESONS, DS-MESONS AND B-MESONS [J].
BAUER, M ;
STECH, B ;
WIRBEL, M .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1987, 34 (01) :103-115
[7]  
BAUER M, 1985, Z PHYS C, V29, P637
[8]   JOINT ANGULAR DECAY DISTRIBUTIONS IN EXCLUSIVE WEAK DECAYS OF HEAVY MESONS AND BARYONS [J].
BIALAS, P ;
KORNER, JG ;
KRAMER, M ;
ZALEWSKI, K .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1993, 57 (01) :115-134
[9]  
BIGI II, 1989, ADV SERIES DIRECTION, V3
[10]  
BLOK BY, 1987, SOV J NUCL PHYS+, V45, P301