Forward-backward asymmetry of top quark in unparticle physics

被引：55

作者：

Chen, Chuan-Hung ^{[3
,4
]}

Cvetic, G. ^{[5
,6
]}

Kim, C. S. ^{[1
,2
]}

机构：

[1] Yonsei Univ, Dept Phys, Seoul 120479, South Korea

[2] Yonsei Univ, IPAP, Seoul 120479, South Korea

[3] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[4] Natl Ctr Theoret Sci, Hsinchu 300, Taiwan

[5] Univ Tecn Federico Santa Maria, Dept Phys, Valparaiso, Chile

[6] Univ Tecn Federico Santa Maria, Valparaiso Ctr Sci & Technol, Valparaiso, Chile

来源：

PHYSICS LETTERS B | 2011年 / 694卷 / 4-5期

关键词：

Forward-backward asymmetry; Top quark;

D O I：

10.1016/j.physletb.2010.10.030

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The updated CDF measurement of the forward-backward asymmetry A(FB) in the top quark production p (p) over bar -> t (t) over bar at Tevatron (with root s = 1.96 TeV) shows a deviation of 2 sigma from the value predicted by the Standard QCD Model. We present calculation of this quantity in the scenario, where colored unparticle physics contributes to the s-channel of the process, and obtain the regions in the plane of the unparticle parameters lambda and d(u), which give the values of the A(FB) and of the total t (t) over bar production cross section compatible with the present measurements. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：393 / 397

页数：5

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