Trilepton signal of minimal supergravity at the Tevatron including τ-lepton contributions

被引：45

作者：

Barger, V ^{[1
]}

Kao, C ^{[1
]}

Li, TJ ^{[1
]}

机构：

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

来源：

PHYSICS LETTERS B | 1998年 / 433卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)00705-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The trilepton signal with missing transverse energy (3l + (E) over bar(T), with l= e or mu) from chargino-neutralino (chi(1) +/- chi(2)(0)) associated production and decays is studied for the upgraded Fermilab Tevatron Collider with 2 TeV center of mass energy and integrated luminosity of 2 fb(-1) (MI) to 20 fb(-1) (TeV33). In some regions of parameter space in the minimal supergravity model, chi(1)(+/-) and chi(2)(0) decay dominantly into final states with tau leptons via real or virtual <(tau)over tilde>(1) sleptons. The contributions from tau - leptonic decays increase the trilepton signal from chi(1)+/-chi(2)(0) by at least a factor of two when soft but realistic cuts on lepton transverse momenta are used. With the Main Injector, a trilepton signal can be detected at tan beta = upsilon(2)/upsilon(1) similar to 3 for universal masses m(1/2),m(0) less than or similar to 200 GeV. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：328 / 334

页数：7

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