@article{3162103,
    title = "Observation of the Associated Production of a Single Top Quark - and a W
Boson in pp Collisions at root s=8 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 Eroe, J. and and Fabjan, C. and Friedl, M. and Fruehwirth, R. and Ghete, V. M. and Hartl, and C. and Hoermann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and and Knuenz, V. and Krammer, M. and Kraetschmer, I. and Liko, D. and and Mikulec, I. and Rabady, D. and Rahbaran, B. and Rohringer, H. and and Schoefbeck, R. and Strauss, J. and Taurok, A. and Treberer-Treberspurg, and W. and Waltenberger, W. and Wulz, C. -E. and Mossolov, V. and Shumeiko, and N. and Gonzalez, J. Suarez and Alderweireldt, S. and Bansal, M. and and Bansal, S. and Cornelis, T. and De Wolf, E. A. and Janssen, X. and and Knutsson, A. and Luyckx, S. and Mucibello, L. and Ochesanu, S. and and Roland, B. and Rougny, R. and Van Haevermaet, H. and Van Mechelen, P. and and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and Blyweert, and S. and D'Hondt, J. and Heracleous, N. and Kalogeropoulos, A. and and Keaveney, J. and Kim, T. J. and Lowette, S. and Maes, M. and Olbrechts, and A. and Strom, D. and Tavernier, S. and Van Doninck, W. and Van Mulders, and P. and Van Onsem, G. P. and Van Parijs, I. and Villella, I. and Caillol, and C. and Clerbaux, B. and De Lentdecker, G. and Favart, L. and Gay, A. P. and R. and Leonard, A. and Marage, P. E. and Mohammadi, A. and Pernie, L. and and Reis, T. and Seva, T. and Thomas, L. and Velde, C. Vander and and Vanlaer, P. and Wang, J. and Adler, V. and Beernaert, K. and Benucci, L. and and Cimmino, A. and Costantini, S. and Dildick, S. and Garcia, G. and and Klein, B. and Lellouch, J. and Mccartin, J. and Rios, A. A. 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    journal = "Physical Review and Physical Review Letters Index",
    year = "2014",
    volume = "112",
    number = "23",
    publisher = "AMER PHYSICAL SOC",
    issn = "0094-0003",
    doi = "10.1103/PhysRevLett.112.231802",
    abstract = "The first observation of the associated production of a single top quark
and a W boson is presented. The analysis is based on a data set
corresponding to an integrated luminosity of 12.2 fb(-1) of
proton-proton collisions at root s = 8 TeV recorded by the CMS
experiment at the LHC. Events with two leptons and a jet originating
from a b quark are selected. A multivariate analysis based on kinematic
and topological properties is used to separate the signal from the
dominant (tt) over bar background. An excess consistent with the signal
hypothesis is observed, with a significance which corresponds to 6.1
standard deviations above a background-only hypothesis. The measured
production cross section is 23.4 +/- 5.4 pb, in agreement with the
standard model prediction."
}