MASS CORRECTIONS TO THE Z-DECAY RATE

被引：132

作者：

CHETYRKIN, KG ^{[1
]}

KUHN, JH ^{[1
]}

机构：

[1] ACAD SCI USSR,INST NUCL RES,MOSCOW 117312,USSR

来源：

PHYSICS LETTERS B | 1990年 / 248卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(90)90306-Q

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The interplay between QCD corrections and the non-vanishing mass of the b quark has an important effect on the decay rate of the Z boson. Large logarithms of MZ2 mb2 are absorbed through the use of the running b-quark mass. The next to leading corrections are evaluated in first order for the axial part of the Z decay rate, the next to leading corrections for the vector part are calculated up to and including the third order in αs. The result is applied to the Z decay rate and to the e+e- cross section into bb at lower energies. © 1990.

引用

页码：359 / 364

页数：6

共 17 条

[1] BOBOLIUBOV NN, 1976, INTRO THEORY QUANTIZ
[2] ANALYTIC CALCULATION OF HIGHER-ORDER QUANTUM-CHROMODYNAMIC CORRECTIONS IN E+E- ANNIHILATION
CELMASTER, W
GONSALVES, RJ
[J]. PHYSICAL REVIEW LETTERS, 1980, 44 (09) : 560 - 564
[3] HIGHER-ORDER CORRECTIONS TO OMICRON-TOT(E+E--]HADRONS) IN QUANTUM CHROMODYNAMICS
CHETYRKIN, KG
KATAEV, AL
TKACHOV, FV
[J]. PHYSICS LETTERS B, 1979, 85 (2-3) : 277 - 279
[4] CHETYRKIN KG, 1986, P INT C RENORMALIZAT
[5] DINE M, 1979, PHYS REV LETT, V43, P668, DOI 10.1103/PhysRevLett.43.668
[6] B-JET ASYMMETRIES IN Z-DECAYS
DJOUADI, A
KUHN, JH
ZERWAS, PM
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 46 (03): : 411 - 417
[7] QUARK MASSES
GASSER, J
LEUTWYLER, H
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1982, 87 (03): : 77 - 169
[8] MASS SINGULARITIES OF FEYNMAN AMPLITUDES
KINOSHITA, T
[J]. JOURNAL OF MATHEMATICAL PHYSICS, 1962, 3 (04) : 650 - &
[9] QCD CORRECTIONS TO THE AXIAL PART OF THE Z DECAY-RATE
KNIEHL, BA
KUHN, JH
[J]. PHYSICS LETTERS B, 1989, 224 (1-2) : 229 - 232
[10] QCD CORRECTIONS TO THE Z-DECAY RATE
KNIEHL, BA
KUHN, JH
[J]. NUCLEAR PHYSICS B, 1990, 329 (03) : 547 - 573

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