@article{3162966, title = "Evidence of b-Jet Quenching in PbPb Collisions at root(NN)-N-S=2.76 TeV", author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and and Adam, W. and Bergauer, T. and Dragicevic, M. and Ero, J. and Fabjan, and C. and Friedl, M. and Fruhwirth, R. and Ghete, V. M. and Hartl, C. and and Hormann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and and Knunz, V. and Krammer, M. and Kratschmer, I. and Liko, D. and Mikulec, and I. and Rabady, D. and Rahbaran, B. and Rohringer, H. and Schofbeck, R. and and Strauss, J. and Taurok, A. and Treberer-Treberspurg, W. and and Waltenberger, W. and Wulz, C. -E. and Mossolov, V. and Shumeiko, N. and and Gonzalez, J. Suarez and Alderweireldt, S. and Bansal, M. and Bansal, S. and and Cornelis, T. and De Wolf, E. 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A. and Borrello, L. and Carlsmith, D. and and Cepeda, M. and Dasu, S. and Duric, S. and Friis, E. and Grothe, M. and and Hall-Wilton, R. and Herndon, M. and Herve, A. and Klabbers, P. and and Klukas, J. and Lanaro, A. and Levine, A. and Loveless, R. and Mohapatra, and A. and Ojalvo, I. and Perry, T. and Pierro, G. A. and Polese, G. and and Ross, I. and Sakharov, A. and Sarangi, T. and Savin, A. and Smith, W. H. and and CMS Collaboration", journal = "Physical Review and Physical Review Letters Index", year = "2014", volume = "113", number = "13", publisher = "AMER PHYSICAL SOC", issn = "0094-0003", doi = "10.1103/PhysRevLett.113.132301", abstract = "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 (p(T)) range of 80-250 GeV/c, and within pseudorapidity |eta| < 2. The nuclear modification factor (RAA) 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 p(T) 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 p(T) range studied." }