Spin effects in processes of single top quark production at hadron colliders

被引：21

作者：

Boos, EE ^{[1
]}

Sherstnev, AV ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119992, Russia

来源：

PHYSICS LETTERS B | 2002年 / 534卷 / 1-4期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0370-2693(02)01659-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate spin properties of single top quark production at hadron colliders. Based on an analogy with single top production and polarized top quark decay, we reproduce in a simple way the results by G. Mahlon and S. Parke on the existence of preferred axes for the decomposition of the top quark spin. For the W-*- and W-g-fusion production modes these axes are related to the down-type quark momentum, The proposed method allows finding kinematical conditions for the observation of top quark polarization in a third process that contributes to single top production and is important at LHC energies, the tW-process, in which spin effects are smeared out by the contribution of diagrams with a QCD gt (t) over bar -vertex. A simple Monte Carlo analysis of spin correlations for the tW-process with subsequent top decay is given as an illustration. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 105

页数：9

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