Collider signals of maximal flavor violation: Same-sign leptons from same-sign top quarks at the Fermilab Tevatron

被引：15

作者：

Bar-Shalom, Shaouly ^{[1
,2
]}

Rajaraman, Arvind ^{[2
]}

Whiteson, Daniel ^{[2
]}

Yu, Felix ^{[2
]}

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[2] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.78.033003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In models of maximal flavor violation (MxFV) suggested in [S. Bar-Shalom and A. Rajaraman, Phys. Rev. D 77, 095011 (2008).] there is at least one new scalar Phi(FV) which couples to the quarks via Phi(FV)q(i)q(j)proportional to xi(ij) where xi(i3),xi(3i)similar to V-tb for i=1, 2 and xi(33)similar to V-td and V is the CKM matrix. In this article, we explore the potential phenomenological implications of MxFV for collider experiments. We study MxFV signals of same-sign leptons from same-sign top-quark pair production at the Tevatron and at the LHC. We show that the current Tevatron data set has strong sensitivity to this signature, for which there are no current limits. For example, if m(Phi FV)similar to 200 GeV and the MxFV coupling xi has a natural value of similar to 1, we expect similar to 12 MxFV events to survive a selection requiring a pair of same-sign leptons, a tagged b-jet and missing transverse energy, over a background of approximately 4-5 events.

引用

页数：5

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