Measurements of masses in supergravity models at CERN LHC

被引：179

作者：

Bachacou, H ^{[1
]}

Hinchliffe, I

Paige, FE

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[2] Kungliga Tekn Hgsk, Stockholm, Sweden

[3] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.62.015009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents new measurements in a case study of the minimal supergravity (SUGRA) model with m(0) = 100 GeV, m(1/2) = 300 GeV, A(0) = 0, tan beta = 2, and sgn mu = + based on four-body distributions from three-step decays and on minimum masses in such decays. These measurements allow masses of supersymmetric particles to be determined without relying on a model. The feasibility of testing slepton universality at the similar to 0.1% level at high luminosity is discussed. In addition, the effect of enlarging the parameter space of the minimal SUGRA model is discussed. The direct production of left-handed sleptons and the nonobservation of additional structure in the dilepton invariant mass distributions are shown to provide additional constraints.

引用

页码：1 / 15

页数：15