Medium-modified fragmentation of b-jets tagged by a leading muon in   ultrarelativistic heavy ion collisions
  The possibility to observe the medium-modified fragmentation of hard b-quarks tagged by a leading muon in ultrarelativistic heavy ion collisions is analyzed. We have found that reasonable statistics, ~20000 events per 1 month of LHC run with lead beams, can be expected for the realistic geometrical acceptance and kinematic cuts. The numerical estimates on the effect of the medium-induced softening b-jet fragmentation function are given. 
I.P.Lokhtin, L.I.Sarycheva, A.M.Snigirev, K.Yu.Teplov