Production of long–lived charginos at the LHC

We performed a study on the probable existence of long–lived charginos in the focus point region of parameter space in the framework of the MSSM with supergravity inspired soft SUSY breaking. The mass degeneracy of higgsino–like chargino and two higgsino–like neutralinos is the necessary condition for a long lifetime. In this region the chargino are long lived and may go through the detector or produce a secondary vertex when they decay inside the detector. We analyze the production and co–production cross section of long–lived charginos at LHC via electroweak interaction and found that, for light long–lived charginos, the production cross section may reach a few percent of pb