Study of muon identification and combined reconstruction inside b-jets for ATLAS

The muon identification inside jets is an important aspect of the muon physics at LHC. Non-isolated muons are predominantly produced by heavy flavour (b- and c-quarks) decays. For this reason, they can be used to identify jets originating from b-quark fragmentation. The main ingredient of the muon b-tagging is the correct muon identification. For this investigation, non-isolated muons were identified in b-jets produced by Higgs decays, Hrarrbbmacrrarrmumu, where the Higgs mass was m_H=120 GeV. The MUID procedure was used for the combined reconstruction of the muon tracks found in the muon system and in the inner detector. To achieve such a goal, it was necessary use additional isolation and impact parameter analysis criteria.