Leading asymmetries in two-hadron production in e+e- annihilation at the Z pole

被引：83

作者：

Boer, D

Jakob, R

Mulders, PJ

机构：

[1] Natl Inst Nucl & High Energy Phys, NL-1009 DB Amsterdam, Netherlands

[2] Univ Pavia, I-27100 Pavia, Italy

[3] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[4] Free Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

来源：

PHYSICS LETTERS B | 1998年 / 424卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)00136-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the leading unpolarized and single spin asymmetries in inclusive two-hadron production in electron-positron annihilation at the Z pole. The azimuthal dependence in the unpolarized differential cross section of almost back-to-back hadrons is a leading cos(2 phi) asymmetry, which arises solely due to the intrinsic transverse momenta of the quarks. An extensive discussion on how to measure this asymmetry and the accompanying time-reversal odd fragmentation functions is given. A simple estimate indicates that the asymmetry could be of the order of a percent. (C) 1998 Elsevier Science B.V.

引用

页码：143 / 151

页数：9

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