Search for Heavy Stable Charged Particles at CMS

摘要

Some supersymmetric and/or extra dimensions models predict the existence of "Heavy Stable Charged Particles" (HSCP) which could be produced at LHC. In pp collisions at s = 7 TeV, the observation of tracks with β= v/c < 1 would constitute a distinctive sign of HSCP production. At CMS, β can be measured in the tracker, from the specific ionization dE/dx, and/or in the muon system, by evaluating the time of flight (TOF). With the first 3.1 pb~(-1) at 7 TeV, limits have been posed on the mass of some types of HSCP, using only the specific ionization. The CMS search for HSCP production with the 2010 data sample will be presented.