Forward-Backward Asymmetry in t(t)over-bar Production from Flavor Symmetries

被引：75

作者：

Grinstein, Benjamin ^{[1
]}

Kagan, Alexander L. ^{[2
,3
]}

Trott, Michael ^{[4
]}

Zupan, Jure ^{[2
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[3] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

[4] Perimeter Inst Theoret Phys, Waterloo, ON N2J 2W9, Canada

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 01期

关键词：

DISTRIBUTIONS; COLLISIONS; SEARCH; TEV;

D O I：

10.1103/PhysRevLett.107.012002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the forward-backward asymmetry in top quark pair production can be enhanced by fields that transform nontrivially under the flavor group and satisfy minimal flavor violation, while at the same time the constraints from associated effects on the d sigma(t (t) over bar)/dM(t (t) over bar) distribution, dijet resonance searches, same-sign top-pair production, and other phenomenology are satisfied. We work out two examples in detail: one where a scalar color antisextet field that is also an antisextet of SU(3)(U) enhances the forward-backward asymmetry and one where the enhancement arises from a vector color octet field that is also an octet of SU(3)(U).

引用

页数：4

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