  The production of jets associated to bottom quarks is measured for the first
time in PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon
pair. Jet spectra are reported in the transverse momentum (pt) range of 80-250
GeV, and within pseudorapidity abs(eta < 2). The nuclear modification factor
(R[AA]) calculated from these spectra shows a strong suppression in the b-jet
yield in PbPb collisions relative to the yield observed in pp collisions at the
same energy. The suppression persists to the largest values of pt studied, and
is centrality dependent. The R[AA] is about 0.4 in the most central events,
similar to previous observations for inclusive jets. This implies that jet
quenching does not have a strong dependence on parton mass and flavor in the
jet pt range studied.
