K/p fakes rejection VERY Preliminary Full offline environment Used Moore – iPatRec – MuonIdentification (MuidStandAlone-MuidComb) Reconstructed 9900 bb->mu6X used for prompt muon, initial layout K->mn, p->mn 10000 events for each pt (14 points from 5.5Gev up to 12GeV) Simulated with acceptance: |h|<1.2, 0<f<180 , dc1 layout

K/p fakes rejection II Rejection cuts Ptm > 5 GeV c2 ID of the identified muon: decay kink gives a spoiled ID fit c2 match : bad match between the inner and the muon track for a muon from a decay c2 fit comb : decay kink gives a spoiled combined fit | 1./Ptm – 1./PtID | : m originating from K/p decays has a Pt lower then the meson detected by the inner tracker c2 fit comb c2 match | 1./Ptm – 1./PtID |

K/p fakes rejection III Preliminary Efficiency curve Remarks: Improvement for low pt needed Prompt mu are muons inside jets : PE and combination more problematic then single muons @ vertex