@article{3149637,
    title = "Measurement of Dijet Angular Distributions and Search for Quark
Compositeness in pp Collisions at root s=7 TeV",
    author = "Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and and Bergauer, T. and Dragicevic, M. and Fabjan, C. and Friedl, M. and and Fruehwirth, R. and Ghete, V. M. and Hammer, J. and Haensel, S. and Hoch, and M. and Hoermann, N. and Hrubec, J. and Jeitler, M. and Kasieczka, G. and and Kiesenhofer, W. and Krammer, M. and Liko, D. and Mikulec, I. and and Pernicka, M. and Rohringer, H. and Schoefbeck, R. and Strauss, J. and and Taurok, A. and Teischinger, F. and Wagner, P. and Waltenberger, W. and and Walzel, G. and Widl, E. and Wulz, C. -E. and Mossolov, V. and Shumeiko, and N. and Gonzalez, J. Suarez and Benucci, L. and Cerny, K. and De Wolf, E. and A. and Janssen, X. and Maes, T. and Mucibello, L. and Ochesanu, S. and and Roland, B. and Rougny, R. and Selvaggi, M. and Van Haevermaet, H. and and Van Mechelen, P. and Van Remortel, N. and Beauceron, S. and Blekman, F. and and Blyweert, S. and D'Hondt, J. and Devroede, O. and Suarez, R. and Gonzalez and Kalogeropoulos, A. and Maes, J. and Maes, M. and Tavernier, and S. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G. P. and and Villella, I. and Charaf, O. and Clerbaux, B. and De Lentdecker, G. and and Dero, V. and Gay, A. P. R. and Hammad, G. H. and Hreus, T. and Marage, and P. E. and Thomas, L. and Velde, C. Vander and Vanlaer, P. and Wickens, and J. and Adler, V. and Costantini, S. and Grunewald, M. and Klein, B. and and Marinov, A. and Mccartin, J. and Ryckbosch, D. and Thyssen, F. and and Tytgat, M. and Vanelderen, L. and Verwilligen, P. and Walsh, S. and and Zaganidis, N. and Basegmez, S. and Bruno, G. and Caudron, J. and Ceard, and L. and De Jeneret, J. De Favereau and Delaere, C. and Demin, P. and and Favart, D. and Giammanco, A. and Gregoire, G. and Hollar, J. and and Lemaitre, V. and Liao, J. and Militaru, O. and Ovyn, S. and Pagano, D. and and Pin, A. and Piotrzkowski, K. and Schul, N. and Beliy, N. and and Caebergs, T. and Daubie, E. and Alves, G. A. and Damiao, D. De Jesus and and Pol, M. E. and Souza, M. H. G. and Carvalho, W. and Da Costa, E. M. and and Martins, C. De Oliveira and De Souza, S. Fonseca and Mundim, L. and and Nogima, H. and Oguri, V. and Prado Da Silva, W. L. and Santoro, A. and and Do Amaral, S. M. 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H. and Swanson, J. and Weinberg, M. and and CMS Collaboration",
    journal = "Physical Review and Physical Review Letters Index",
    year = "2011",
    volume = "106",
    number = "20",
    publisher = "AMER PHYSICAL SOC",
    issn = "0094-0003",
    doi = "10.1103/PhysRevLett.106.201804",
    abstract = "Dijet angular distributions are measured over a wide range of dijet
invariant masses in pp collisions at root s = 7 TeV, at the CERN LHC.
The event sample, recorded with the CMS detector, corresponds to an
integrated luminosity of 36 pb(-1). The data are found to be in good
agreement with the predictions of perturbative QCD, and yield no
evidence of quark compositeness. With a modified frequentist approach, a
lower limit on the contact interaction scale for left-handed quarks of
Lambda(+) = 5.6 TeV (Lambda(-) = 6.7 TeV) for destructive (constructive)
interference is obtained at the 95% confidence level."
}