Analysis of the long-lived slepton next-to-lightest supersymmetric particle in the gauge-mediated supersymmetry breaking model at a linear collider

Pedro G. Mercadante, J. Kenichi Mizukoshi, Hitoshi Yamamoto

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20 Citations (Scopus)

Abstract

We performed an analysis on the detection of a long-lived slepton at a linear collider with </s = 500 GeV. In gauge-mediated symmetry breaking models a long-lived NLSP is predicted for a large value of the supersymmetry breaking scale √F. Furthermore in a large portion of the parameter space this particle is a stau. Such heavy charged particles will leave a track in the tracking volume and hit the muonic detector. In order to disentangle this signal from the muon background, we explore the kinematics and particle identification tools: a time-of-flight device, dE/dX, and Cherenkov devices. We show that a linear collider will be able to detect long-lived staus with masses up to the kinematical limit of the machine. We also present our estimation of the sensitivity to the stau lifetime.

Original languageEnglish
Article number015005
JournalPhysical Review D
Volume64
Issue number1
DOIs
Publication statusPublished - 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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