Neutralino signatures of the singlet extended MSSM

被引：40

作者：

Barger, Vernon

Langacker, Paul

Shaughnessy, Gabe ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[3] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA

来源：

PHYSICS LETTERS B | 2007年 / 644卷 / 5-6期

关键词：

D O I：

10.1016/j.physletb.2006.11.043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Extending the Higgs sector of the MSSM by the addition of a gauge singlet scalar field can remedy the A problem. We explore the implications of extended models for both the spectrum of the neutralinos and the cascade decays of the neutralinos and charginos. Extra steps due to light decoupled neutralinos in the cascade decays of both neutralinos and charginos allow an excess of trilepton events compared to the MSSM and the existence of events with higher lepton multiplicity. Additionally, displaced vertices of the chi(0)(2) due to small decay widths in some models may be observable. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：361 / 369

页数：9

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