LONG-DISTANCE CONTRIBUTION TO K+-]PI+NU(NU-OVER-BAR

被引：61

作者：

LU, M

WISE, MB

机构：

[1] California Institute of Technology, Pasadena

来源：

PHYSICS LETTERS B | 1994年 / 324卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(94)90223-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We estimate the long distance contribution to the K+ --> pi+ vvBAR decay amplitude using chiral perturbation theory. We find that it is likely to be less than a few percent of the part of the short distance contribution proportional to the square of the charm quark mass. In the large N(c) limit the leading (in chiral perturbation theory) long distance contribution to K+ --> pi+ vvBAR from Feynman diagrams with a W and Z0 vanishes.

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页码：461 / 464

页数：4

相关论文

共 13 条

[1] PENGUIN-BOX EXPANSION - FLAVOR-CHANGING NEUTRAL-CURRENT PROCESSES AND A HEAVY TOP QUARK [J].

BUCHALLA, G ;

BURAS, AJ ;

HARLANDER, MK .

NUCLEAR PHYSICS B, 1991, 349 (01) :1-47

[2]

BUCHALLA G, MPIPH9344

[3] STRONG INTERACTION CORRECTIONS TO THE DECAY K-]PI-NU-NU-BAR FOR LARGE MT [J].

DIB, CO ;

DUNIETZ, I ;

GILMAN, FJ .

MODERN PHYSICS LETTERS A, 1991, 6 (39) :3573-3581

[4]

DIVECCHIA P, 1980, NUCL PHYS B, V1751, P233

[5] RADIATIVE KAON DECAYS AND CP VIOLATION IN CHIRAL PERTURBATION-THEORY [J].

ECKER, G ;

PICH, A ;

DERAFAEL, E .

NUCLEAR PHYSICS B, 1988, 303 (04) :665-702

[6] CONSTRAINTS ON LIGHT PARTICLES FROM KAON DECAYS [J].

ELLIS, J ;

HAGELIN, JS .

NUCLEAR PHYSICS B, 1983, 217 (01) :189-214

[7] RARE KAON DECAYS [J].

HAGELIN, JS ;

LITTENBERG, LS .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 1989, 23 :1-40

[8] EFFECTS OF SUPERHEAVY QUARKS AND LEPTONS IN LOW-ENERGY WEAK PROCESSES KAPPA-L-]MU-MU,KAPPA+-]PI+NU-NUBAR AND KAPPA-0]-]KAPPA-BAR-0 [J].

INAMI, T ;

LIM, CS .

PROGRESS OF THEORETICAL PHYSICS, 1981, 65 (01) :297-314

[9] CORRECTION [J].

INAMI, T .

PROGRESS OF THEORETICAL PHYSICS, 1981, 65 (05) :1772-1772

[10] STRONG-INTERACTION EFFECTS ON K-]2MU DECAY AND KL-KS MASS-DIFFERENCES - REPLY [J].

NOVIKOV, VA ;

SHIFMAN, MA ;

VAINSHTEIN, AI ;

ZAKHAROV, VI .

PHYSICAL REVIEW D, 1977, 16 (01) :223-230