Precise calculation of M(W), sin(2)(theta)over-cap(W)(M(Z)), and sin(2)theta(eff)(lept)

被引：148

作者：

Degrassi, G ^{[1
]}

Gambino, P ^{[1
]}

Sirlin, A ^{[1
]}

机构：

[1] NYU,DEPT PHYS,NEW YORK,NY 10003

来源：

PHYSICS LETTERS B | 1997年 / 394卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(96)01677-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The two-loop O(g(4)M(t)(2)/M(w)(2)) corrections are incorporated in the theoretical calculation of M(w), sin(2)<(theta)over cap>(w)(M(z)), and sin(2) theta(eff)(lept), as functions of Mr. The analysis is carried out in a previously proposed MS formulation and two novel on-shell resummation schemes. It is found that the inclusion of the new effects sharply decreases the scheme and residual scale dependence of the calculations. QCD corrections are incorporated in two different approaches, Comparison with the world average of sin(2) theta(eff)(lept) leads to M(H) = 127(-71)(+143) GeV and M(w) = 80.367 +/- 0.048 GeV, with small variations among the six calculations.

引用

页码：188 / 194

页数：7

共 25 条

[1] O(ALPHA-ALPHA(S)(2)) CORRECTION TO THE ELECTROWEAK RHO-PARAMETER [J].