@article{3155384, title = "Search for quark compositeness in dijet angular distributions from pp collisions at root s=7 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 and Hammer, J. and Hoch, M. and Hoermann, N. and Hrubec, J. and Jeitler, M. and and Kiesenhofer, W. and Krammer, M. and Liko, D. and Mikulec, I. and and Pernicka, M. and Rahbaran, B. and Rohringer, C. and Rohringer, H. and and Schoefbeck, R. and Strauss, J. and Taurok, A. and Teischinger, F. and and Wagner, P. 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, S. and Benucci, L. and Cornelis, T. and De Wolf, E. A. and and Janssen, X. and Luyckx, S. and Maes, T. and Mucibello, L. and Ochesanu, and S. and Roland, B. and Rougny, R. and Selvaggi, M. and Van Haevermaet, H. and and Van Mechelen, P. and Van Remortel, N. and Van Spilbeeck, A. and and Blekman, F. and Blyweert, S. and D'Hondt, J. and Suarez, R. Gonzalez and and Kalogeropoulos, A. and Maes, M. and Olbrechts, A. and Van Doninck, W. and and Van Mulders, P. and Van Onsem, G. P. and Villella, I. and Charaf, O. and and Clerbaux, B. and De Lentdecker, G. and Dero, V. and Gay, A. P. R. and and Hammad, G. H. and Hreus, T. and Leonard, A. and Marage, P. E. and and Thomas, L. and Vander Velde, C. and Vanlaer, P. and Wickens, J. and and Adler, V. and Beernaert, K. and Cimmino, A. and Costantini, S. and and Garcia, G. and Grunewald, M. and Klein, B. and Lellouch, J. and Marinov, and A. and Mccartin, J. and Rios, A. A. Ocampo and Ryckbosch, D. and and Strobbe, N. and Thyssen, F. and Tytgat, M. and Vanelderen, L. and and Verwilligen, P. and Walsh, S. and Yazgan, E. and Zaganidis, N. and and Basegmez, S. and Bruno, G. and Ceard, L. and De Jeneret, J. De Favereau and and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, L. and and Giammanco, A. and Gregoire, G. and Hollar, J. and Lemaitre, V. and Liao, and J. and Militaru, O. and Nuttens, C. and Pagano, D. and Pin, A. and and Piotrzkowski, K. and Schul, N. and Beliy, N. and Caebergs, T. and and Daubie, E. and Alves, G. A. and De Jesus Damiao, D. and Martins, T. and and Pol, M. E. and Souza, M. H. G. and Alda Junior, W. L. and Carvalho, W. and and Custodio, A. and Da Costa, E. M. and De Oliveira Martins, C. and and Fonseca De Souza, S. and Matos Figueiredo, D. and Mundim, L. and Nogima, and H. and Oguri, V. and Prado Da Silva, W. L. and Santoro, A. and Silva Do and Amaral, S. M. and Soares Jorge, L. and Sznajder, A. and Anjos, T. 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H. and Swanson, and J. and CMS Collaboration", journal = "Journal of High Energy Physics", year = "2012", number = "5", publisher = "Springer-Verlag", issn = "1126-6708, 1029-8479", doi = "10.1007/JHEP05(2012)055", keywords = "Hadron-Hadron Scattering", abstract = "A search for quark compositeness using dijet angular distributions from pp collisions at root s = 7TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2 : 2 fb(-1), recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4TeV to above 3TeV and compared with a variety of contact interaction models, including those which take into account the effects of next-to-leading-order QCD corrections. The data are found to be in agreement with the predictions of perturbative QCD, and lower limits are obtained on the contact interaction scale, ranging from 7.5 up to 14.5TeV at 95% confidence level." }