@article{3157057,
    title = "Identification of b-quark jets with the CMS experiment",
    author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and and Adam, W. and Aguilo, E. and Bergauer, T. and Dragicevic, M. and and Eroe, J. and Fabjan, C. and Friedl, M. and Fruehwirth, R. and Ghete, V. and M. and Hammer, J. and Hoermann, N. and Hrubec, J. and Jeitler, M. and and Kiesenhofer, W. and Knunz, V. and Krammer, M. and Kraetschmer, I. and and Liko, D. and Mikulec, I. and Pernicka, M. and Rahbaran, B. and and Rohringer, C. and Rohringer, H. and Schoefbeck, R. and Strauss, J. and and Taurok, A. and Waltenberger, W. and Walzel, G. and Widl, E. and Wulz, C. and -E. and Mossolov, V. and Shumeiko, N. and Gonzalez, J. Suarez and and Bansal, M. and Bansal, S. and Cornelis, T. and De Wolf, E. A. and and Janssen, X. and Luyckx, S. and Mucibello, L. and Ochesanu, S. and and Roland, B. and Rougny, R. and Selvaggi, M. and Staykova, Z. and Van and Haevermaet, H. and Van Mechelen, P. and Van Remortel, N. and Van and Spilbeeck, A. and Blekman, F. and Blyweert, S. and D'Hondt, J. and and Suarez, R. Gonzalez and Kalogeropoulos, A. and Maes, M. and Olbrechts, and A. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G. P. and and Villella, I. and Clerbaux, B. and De Lentdecker, G. and Dero, V. and and Gay, A. P. R. and Hreus, T. and Leonard, A. and Marage, P. E. and and Mohammadi, A. and Reis, T. and Thomas, L. and Vander Marcken, G. and and Vander Velde, C. and Vanlaer, P. and Wang, J. and Adler, V. and and Beernaert, K. and Cimmino, A. and Costantini, S. and Garcia, G. and and Grunewald, M. and Klein, B. and Lellouch, J. and Marinov, A. and and Mccartin, J. and Rios, A. A. 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H. and Swanson, J. and CMS Collaboration",
    journal = "Journal of Instrumentation",
    year = "2013",
    volume = "8",
    publisher = "IOP Publishing Ltd",
    issn = "1748-0221",
    doi = "10.1088/1748-0221/8/04/P04013",
    keywords = "Large detector-systems performance; Pattern recognition, cluster
finding, calibration and fitting methods; Performance of High Energy
Physics Detectors",
    abstract = "At the Large Hadron Collider, the identification of jets originating
from b quarks is important for searches for new physics and for
measurements of standard model processes. A variety of algorithms has
been developed by CMS to select b-quark jets based on variables such as
the impact parameters of charged-particle tracks, the properties of
reconstructed decay vertices, and the presence or absence of a lepton,
or combinations thereof. The performance of these algorithms has been
measured using data from proton-proton collisions at the LHC and
compared with expectations based on simulation. The data used in this
study were recorded in 2011 at root s = 7TeV for a total integrated
luminosity of 5.0 fb(-1). The efficiency for tagging b-quark jets has
been measured in events from multijet and t-quark pair production. CMS
has achieved a b-jet tagging efficiency of 85% for a light-parton
misidentification probability of 10% in multijet events. For analyses
requiring higher purity, a misidentification probability of only 1.5%
has been achieved, for a 70% b-jet tagging efficiency."
}