# Search for Heavy Stable and Long-Lived Particles in $e^+ e^-$ Collisions at $\sqrt{s}$=189 GeV

Abstract : 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 Detectorand 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.
Document type :
Journal articles

Cited literature [2 references]

http://hal.in2p3.fr/in2p3-00004109
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Tuesday, May 2, 2000 - 2:17:52 PM
Last modification on : Sunday, June 26, 2022 - 11:42:29 AM
Long-term archiving on: : Friday, June 18, 2010 - 4:44:33 PM

### Citation

P. Abreu, W. Adam, T. Adye, P. Adzic, Z. Albrecht, et al.. Search for Heavy Stable and Long-Lived Particles in $e^+ e^-$ Collisions at $\sqrt{s}$=189 GeV. Physics Letters B, Elsevier, 2000, 478, pp.65-72. ⟨10.1016/S0370-2693(00)00265-3⟩. ⟨in2p3-00004109⟩

Record views