ISOSPIN STRUCTURE OF PENGUIN DIAGRAMS AND THEIR CONSEQUENCES IN B-MESON PHYSICS

被引:143
作者
DESHPANDE, NG
HE, XG
机构
[1] Institute of Theoretical Science, University of Oregon, Eugene
关键词
D O I
10.1103/PhysRevLett.74.26
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Isospin structure of electroweak penguin diagrams is different from the gluon-mediated or strong penguin. Given the large top mass, these electroweak contributions are significant. This has the consequence that some previous analyses which relied on a simple isospin structurte in charmless B meson decays become inapplicable. We present the general Hamiltonian in next-to-leading order QCD, and illustrate our conclusion quantitatively for B and BK decays in the factorization approximation. Some remarks on CP asymmetries in B meson decays are also made. © 1994 The American Physical Society.
引用
收藏
页码:26 / 29
页数:4
相关论文
共 27 条
[1]   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
[2]   NOTES ON THE OBSERVABILITY OF CP-VIOLATIONS IN B-DECAYS [J].
BIGI, II ;
SANDA, AI .
NUCLEAR PHYSICS B, 1981, 193 (01) :85-108
[3]  
BURAS A, 1993, NUCL PHYS B, P75
[4]   2-LOOP ANOMALOUS DIMENSION MATRIX FOR DELTA-S=1 WEAK NONLEPTONIC DECAYS .1. O[ALPHA(S)(2)] [J].
BURAS, AJ ;
JAMIN, M ;
LAUTENBACHER, ME ;
WEISZ, PH .
NUCLEAR PHYSICS B, 1993, 400 (1-3) :37-74
[5]   THE DELTA-S=1 EFFECTIVE HAMILTONIAN INCLUDING NEXT-TO-LEADING ORDER QCD AND QED CORRECTIONS [J].
CIUCHINI, M ;
FRANCO, E ;
MARTINELLI, G ;
REINA, L .
NUCLEAR PHYSICS B, 1994, 415 (02) :403-459
[6]   PENGUIN-DIAGRAM-INDUCED B-]K(X)PHI DECAYS IN THE STANDARD MODEL AND IN THE 2-HIGGS-DOUBLET MODEL [J].
DAVIES, AJ ;
HAYASHI, T ;
MATSUDA, M ;
TANIMOTO, M .
PHYSICAL REVIEW D, 1994, 49 (11) :5882-5889
[7]   2 BODY NONLEPTONIC DECAYS OF B AND BS MESONS [J].
DEANDREA, A ;
DIBARTOLOMEO, N ;
GATTO, R ;
NARDULLI, G .
PHYSICS LETTERS B, 1993, 318 (03) :549-558
[8]  
DEANDREA A, 1993, PHYS LETT B, V320, P173
[9]  
DESHPANDE N, OITS538 REP
[10]   PENGUIN-MEDIATED EXCLUSIVE HADRONIC WEAK B-DECAYS [J].
DESHPANDE, NG ;
TRAMPETIC, J .
PHYSICAL REVIEW D, 1990, 41 (03) :895-899