  We study a possibility to detect charged sleptons and flavour lepton number
violation at LHC (CMS). We investigate the production and decays of right- and
left-handed sleptons separately. We have found that for luminosity L = 10**5
1/pb it would be possible to detect right-handed sleptons with a mass up to 325
GeV and left-handed ones with a mass up to 350 GeV. We also investigate a
possibility to look for flavour lepton number violation in slepton decays due
to the mixing of different slepton generations. We find that for the maximal
(smu_R - se_R) mixing it is possible to detect such effect for sleptons with a
mass up to 250 GeV.
