Electroweak penguin effects in charmless B-+/-,B-0->PP and PV decays

被引：35

作者：

Du, DS

Guo, LB

机构：

[1] ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA

[2] HENAN NORMAL UNIV,DEPT PHYS,XINXIANG 453002,HENAN,PEOPLES R CHINA

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1997年 / 75卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1007/s002880050441

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：

Using the next-to-leading order low energy effective Hamiltonian for \Delta B\ = 1, Delta C = Delta U = 0 transitions, the contributions of electroweak penguin operators in charmless B-+/-,B-0 --> PP and PV decays are estimated in the standard model. We find that, for some channels, the electroweak penguin effects can enhance or reduce the QCD penguin and/or tree level contributions by at least 30%, and can even play a dominant role.

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页码：9 / 15

页数：7

相关论文

共 34 条

[1] IMPLICATIONS OF THE TOP-QUARK MASS MEASUREMENT FOR THE CKM PARAMETERS, X(S) AND CP ASYMMETRIES [J].

ALI, A ;

LONDON, D .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 65 (03) :431-443

[2] 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

[3]

BAUER M, 1985, Z PHYS C, V29, P637

[4] 2-BODY DECAYS OF BS MESONS [J].

BIJNENS, J ;

HOOGEVEEN, F .

PHYSICS LETTERS B, 1992, 283 (3-4) :434-438

[5] THE ANATOMY OF EPSILON'-EPSILON IN THE STANDARD MODEL [J].

BUCHALLA, G ;

BURAS, AJ ;

HARLANDER, MK .

NUCLEAR PHYSICS B, 1990, 337 (02) :313-362

[6] THE ANATOMY OF EPSILON(')/EPSILON BEYOND LEADING LOGARITHMS WITH IMPROVED HADRONIC MATRIX-ELEMENTS [J].

BURAS, AJ ;

JAMIN, M ;

LAUTENBACHER, ME .

NUCLEAR PHYSICS B, 1993, 408 (02) :209-285

[7] 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

[8] EFFECTIVE-HAMILTONIANS FOR DELTA-S=1 AND DELTA-B=1 NONLEPTONIC DECAYS BEYOND THE LEADING LOGARITHMIC APPROXIMATION [J].

BURAS, AJ ;

JAMIN, M ;

LAUTENBACHER, ME ;

WEISZ, PH .

NUCLEAR PHYSICS B, 1992, 370 (01) :69-104

[9] 2-LOOP ANOMALOUS DIMENSION MATRIX FOR DELTA-S=1 WEAK NONLEPTONIC DECAYS .2. O[ALPHA-ALPHA(S)] [J].

BURAS, AJ ;

JAMIN, M ;

LAUTENBACHER, ME .

NUCLEAR PHYSICS B, 1993, 400 (1-3) :75-102

[10]

BURAS AJ, 1992, NUCL PHYS B, V375, P501

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