Next-to-leading order corrections to single top quark production and decay at the Fermilab Tevatron:: s-channel process -: art. no. 054023

被引：83

作者：

Cao, QH ^{[1
]}

Schwienhorst, R ^{[1
]}

Yuan, CP ^{[1
]}

机构：

[1] Michigan State Univ, Dept Phys Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.71.054023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a study of s-channel single top quark production at the upgraded Tevatron p (p) over bar collider, including the next-to-leading order (NLO) QCD corrections to the production and decay of the top quark. The modified narrow width approximation was adopted to preserve the spin of the top quark in its production and decay. We discuss the effect of the different O(alpha(s)) contributions on the inclusive cross section as well as various kinematical distributions after imposing the relevant cuts to select s-channel single top signal events. In particular, the O(alpha(s)) decay contribution, while small in size, has a significant impact on several distributions. With the help of the best-Jet algorithm to reconstruct the top quark, we demonstrate that it is possible to study kinematical and spin correlations in s-channel single top events. We furthermore compare top quark spin measurements in two different bases and show how NLO corrections have to be taken into consideration in searches for the Higgs boson through W+/- H associated production at the Tevatron.

引用

页码：1 / 20

页数：20

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