Analysis of Long-Lived Slepton NLSP in GMSB model at Linear Collider

Details Analysis of Long-Lived Slepton NLSP in GMSB model at Linear Collider Analysis of Long-Lived Slepton NLSP in GMSB model at Linear Collider

2000-10-07

arxiv.org/abs/hep-ph/0010067v2

Phys.Rev. D64 (2001) 015005

Physics

High Energy Physics

High Energy Physics - Phenomenology

Minor changes, Ref. 10 fixed. 12 pages, RevTex, 4 eps figures

Scientific paper

10.1103/PhysRevD.64.015005

We performed an analysis on the detection of a long-lived slepton at a linear collider with $\sqrt{s}=500$ GeV. In GMSB models a long-lived NLSP is predicted for large value of the supersymmetry breaking scale $\sqrt{F}$. 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 kinematics and particle identification tools: time of flight device, dE/dX and Cerenkov 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.

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