ON THE POSSIBLE DETECTION OF MASSIVE STABLE EXOTIC PARTICLES AT THE LHC

The possible detection of massive quasi-stable exotic particles at the high luminosity hadronic colliders is discussed. In this decade, the LHC, now under preparation, has the best opportunity to observe them a t the TeV scale. The present design of the ATLAS detector, that has be en almost irreversibly decided, may turn out to be flexible enough to allow the detection of this interesting class of exotic particles. The trigger acceptance, the track reconstruction and the particle identif ication are studied. The necessity of a good measurement of the ioniza tion loss in the muon sector of the detectors is recommended.