Search for Heavy Stable and Long-Lived Particles in e+e- Collisions at sqrt(s)=189 GeV

Details Search for Heavy Stable and Long-Lived Particles in e+e- Collisions at sqrt(s)=189 GeV Search for Heavy Stable and Long-Lived Particles in e+e- Collisions at sqrt(s)=189 GeV

2001-03-22

arxiv.org/abs/hep-ex/0103038v1

Phys.Lett.B478:65-72,2000

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 2 figures

Scientific paper

10.1016/S0370-2693(00)00265-3

A search for stable and long-lived heavy charged particles was performed using the data taken by the DELPHI experiment at an energy of 189 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detector and the ionisation loss measured in the Time Projection Chamber were used to identify heavy particles passing through the detector. No evidence for the production of such particles has been found, therefore exclusion limits at 95% confidence level were derived on the masses of left and right handed smuons and staus. The results were combined with previous DELPHI searches in this channel. Including previous DELPHI results, masses of left (right) handed stable smuons and staus can be excluded between 2 GeV/c^2 and 88 (87.5) GeV/c^2 at 95% CL.

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