HEAVY JET MASS-DISTRIBUTION IN E+E- ANNIHILATION

被引：87

作者：

CATANI, S ^{[1
]}

TURNOCK, G ^{[1
]}

WEBBER, BR ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

来源：

PHYSICS LETTERS B | 1991年 / 272卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91845-M

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Predictions are presented for the distribution of rho = M(h)2/s in e+e- annihilation, where s is the centre-of-mass energy squared and M(h) is the heavy jet mass, defined as the greater if the invariant masses of two hemispheres separated by the plane normal to the thrust axis. The calculation includes resummation of leading and next-to-leading logarithms of rho to all orders in QCD perturbation theory, together with non-logarithmic terms up to second order. This reduces the renormalization scale dependence relative to the fixed-order calculation and should permit the strong coupling constant to be measured accurately using a larger region of the distribution.

引用

页码：368 / 372

页数：5

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