Quadratic mass corrections of order O(alpha(3)(s)m(q)(2)/s) to the decay rate of Z- and W-bosons

被引：52

作者：

Chetyrkin, KG

Kuhn, JH

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST PHYS,D-80805 MUNICH,GERMANY

[2] UNIV KARLSRUHE,INST THEORET TEILCHENPHYS,D-76128 KARLSRUHE,GERMANY

来源：

PHYSICS LETTERS B | 1997年 / 406卷 / 1-2期

关键词：

QCD; Z boson decay; W boson decay;

D O I：

10.1016/S0370-2693(97)00631-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analytically compute quadratic mass corrections of order O(alpha(s)(3)m(q)(2)/s) to the absorptive part of the (non-diagonal) correlator of two axial vector currents. This allows us to find the correction of order O(alpha(s)(3)m(q)(2)/M-W(2)) to Gamma(W --> hadrons) as well as similar corrections to Gamma(Z --> hadrons). (C) 1997 Published by Elsevier Science B.V.

引用

收藏

页码：102 / 109

页数：8

相关论文

共 27 条

[1]

[Anonymous], P282900 JINR

[2] STRONG CONSTRAINT ON CHIRAL SYMMETRY BREAKING AT SHORT DISTANCES [J].

BROADHURST, DJ .

NUCLEAR PHYSICS B, 1975, B 85 (01) :189-207

[3]

Chetyrkin K. G., 1996, Physics Reports, V277, P189, DOI 10.1016/S0370-1573(96)00012-9

[4] Correlator of the quark scalar currents and Gamma(tot)(H->hadrons) at O(alpha(s)(3)) in pQCD [J].

Chetyrkin, KG .

PHYSICS LETTERS B, 1997, 390 (1-4) :309-317

[5] MASS SINGULARITIES IN LIGHT-QUARK CORRELATORS - THE STRANGE QUARK CASE [J].

CHETYRKIN, KG ;

DOMINGUEZ, CA ;

PIRJOL, D ;

SCHILCHER, K .

PHYSICAL REVIEW D, 1995, 51 (09) :5090-5100

[6] MASS CORRECTIONS OF ORDER ALPHA(S)2M(B)2/M(Z)2 TO THE AXIAL Z-BOSON DECAY-RATE [J].

CHETYRKIN, KG ;

KUHN, JH ;

KWIATKOWSKI, A .

PHYSICS LETTERS B, 1992, 282 (1-2) :221-227

[7] MASS CORRECTIONS TO THE TAU-DECAY RATE [J].

CHETYRKIN, KG ;

KWIATKOWSKI, A .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1993, 59 (03) :525-531

[8] POWER SUPPRESSED HEAVY-QUARK MASS CORRECTIONS TO THE TAU-LEPTON AND Z-BOSON DECAY-RATES [J].

CHETYRKIN, KG .

PHYSICS LETTERS B, 1993, 307 (1-2) :169-176

[9] MASS CORRECTIONS TO THE Z-DECAY RATE [J].

CHETYRKIN, KG ;

KUHN, JH .

PHYSICS LETTERS B, 1990, 248 (3-4) :359-364

[10] Corrections of order alpha(3)(s) to R(had) in pQCD with light gluinos [J].

Chetyrkin, KG .

PHYSICS LETTERS B, 1997, 391 (3-4) :402-412