@article{3073276, title = "Event shapes and azimuthal correlations in Z+jets events in pp collisions at s=7 TeV", author = "Chatrchyan, S. and Khachatryan, V. and Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Aguilo, E. and Bergauer, T. and Dragicevic, M. and Erö, J. and Fabjan, C. and Friedl, M. and Frühwirth, R. and Ghete, V.M. and Hörmann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and Knünz, V. and Krammer, M. and Krätschmer, I. and Liko, D. and Mikulec, I. and Pernicka, M. and Rabady, D. and Rahbaran, B. and Rohringer, C. and Rohringer, H. and Schöfbeck, R. and Strauss, J. and Taurok, A. and Waltenberger, W. and Wulz, C.-E. and Mossolov, V. and Shumeiko, N. and Suarez Gonzalez, J. and Bansal, M. and Bansal, S. and Cornelis, T. and De Wolf, E.A. and Janssen, X. and Luyckx, S. and Mucibello, L. and Ochesanu, S. and Roland, B. and Rougny, R. and Selvaggi, M. and Van Haevermaet, H. and Van Mechelen, P. and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and Blyweert, S. and DʼHondt, J. and Gonzalez Suarez, R. and Kalogeropoulos, A. and Maes, M. and Olbrechts, A. and Tavernier, S. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G.P. and Villella, I. and Clerbaux, B. and De Lentdecker, G. and Dero, V. and Gay, A.P.R. and Hreus, T. and Léonard, A. and Marage, P.E. and Mohammadi, A. and Reis, T. and Thomas, L. and Vander Velde, C. and Vanlaer, P. and Wang, J. and Adler, V. and Beernaert, K. and Cimmino, A. and Costantini, S. and Garcia, G. and Grunewald, M. and Klein, B. and Lellouch, J. and Marinov, A. and Mccartin, J. and Ocampo Rios, A.A. and Ryckbosch, D. and Sigamani, M. and Strobbe, N. and Thyssen, F. and Tytgat, M. and Walsh, S. and Yazgan, E. and Zaganidis, N. and Basegmez, S. and Bruno, G. and Castello, R. and Ceard, L. and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, L. and Giammanco, A. and Hollar, J. and Lemaitre, V. and Liao, J. and Militaru, O. and Nuttens, C. and Pagano, D. and Pin, A. and Piotrzkowski, K. and Vizan Garcia, J.M. and Beliy, N. and Caebergs, T. and Daubie, E. and Hammad, G.H. and Alves, G.A. and Correa Martins Junior, M. and Martins, T. and Pol, M.E. and Souza, M.H.G. and Aldá Júnior, W.L. and Carvalho, W. and Custódio, A. and Da Costa, E.M. and De Jesus Damiao, D. and De Oliveira Martins, C. and Fonseca De Souza, S. and Malbouisson, H. and Malek, M. and Matos Figueiredo, D. and Mundim, L. and Nogima, H. and Prado Da Silva, W.L. and Santoro, A. and Soares Jorge, L. and Sznajder, A. and Vilela Pereira, A. and Anjos, T.S. and Bernardes, C.A. and Dias, F.A. and Fernandez Perez Tomei, T.R. and Gregores, E.M. and Lagana, C. and Marinho, F. and Mercadante, P.G. and Novaes, S.F. and Padula, S.S. and Genchev, V. and Iaydjiev, P. and Piperov, S. and Rodozov, M. and Stoykova, S. and Sultanov, G. and Tcholakov, V. and Trayanov, R. and Vutova, M. and Dimitrov, A. and Hadjiiska, R. and Kozhuharov, V. and Litov, L. and Pavlov, B. and Petkov, P. and Bian, J.G. and Chen, G.M. and Chen, H.S. and Jiang, C.H. and Liang, D. and Liang, S. and Meng, X. and Tao, J. and Wang, J. and Wang, X. and Wang, Z. and Xiao, H. and Xu, M. and Zang, J. and Zhang, Z. and Asawatangtrakuldee, C. and Ban, Y. and Guo, Y. and Li, W. and Liu, S. and Mao, Y. and Qian, S.J. and Teng, H. and Wang, D. and Zhang, L. and Zou, W. and Avila, C. and Carrillo Montoya, C.A. and Gomez, J.P. and Gomez Moreno, B. and Osorio Oliveros, A.F. and Sanabria, J.C. and Godinovic, N. and Lelas, D. and Plestina, R. and Polic, D. and Puljak, I. and Antunovic, Z. and Kovac, M. and Brigljevic, V. and Duric, S. and Kadija, K. and Luetic, J. and Mekterovic, D. and Morovic, S. and Tikvica, L. and Attikis, A. and Galanti, M. and Mavromanolakis, G. and Mousa, J. and Nicolaou, C. and Ptochos, F. and Razis, P.A. and Finger, M. and Finger, M., Jr. and Assran, Y. and Elgammal, S. and Ellithi Kamel, A. and Mahmoud, M.A. and Mahrous, A. and Radi, A. and Kadastik, M. and Müntel, M. and Murumaa, M. and Raidal, M. and Rebane, L. and Tiko, A. and Eerola, P. and Fedi, G. and Voutilainen, M. and Härkönen, J. and Heikkinen, A. and Karimäki, V. and Kinnunen, R. and Kortelainen, M.J. and Lampén, T. and Lassila-Perini, K. and Lehti, S. and Lindén, T. and Luukka, P. and Mäenpää, T. and Peltola, T. and Tuominen, E. and Tuominiemi, J. and Tuovinen, E. and Ungaro, D. and Wendland, L. and Korpela, A. and Tuuva, T. and Besancon, M. and Choudhury, S. and Dejardin, M. and Denegri, D. and Fabbro, B. and Faure, J.L. and Ferri, F. and Ganjour, S. and Givernaud, A. and Gras, P. and Hamel de Monchenault, G. and Jarry, P. and Locci, E. and Malcles, J. and Millischer, L. and Nayak, A. and Rander, J. and Rosowsky, A. and Titov, M. and Baffioni, S. and Beaudette, F. and Benhabib, L. and Bianchini, L. and Bluj, M. and Busson, P. and Charlot, C. and Daci, N. and Dahms, T. and Dalchenko, M. and Dobrzynski, L. and Florent, A. and Granier de Cassagnac, R. and Haguenauer, M. and Miné, P. and Mironov, C. and Naranjo, I.N. and Nguyen, M. and 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Cepeda, M. and Dasu, S. and Friis, E. and Gray, L. and Grogg, K.S. and Grothe, M. and Hall-Wilton, R. and Herndon, M. and Hervé, A. and Klabbers, P. and Klukas, J. and Lanaro, A. and Lazaridis, C. and Loveless, R. and Mohapatra, A. and Mozer, M.U. and Ojalvo, I. and Palmonari, F. and Pierro, G.A. and Ross, I. and Savin, A. and Smith, W.H. and Swanson, J. and CMS Collaboration", journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics", year = "2013", volume = "722", number = "4-5", pages = "238-261", publisher = "Elsevier B.V.", doi = "10.1016/j.physletb.2013.04.025", abstract = "Measurements of event shapes and azimuthal correlations are presented for events where a Z boson is produced in association with jets in proton-proton collisions. The data collected with the CMS detector at the CERN LHC at s=7 TeV correspond to an integrated luminosity of 5.0 fb−1. The analysis provides a test of predictions from perturbative QCD for a process that represents a substantial background to many physics channels. Results are presented as a function of jet multiplicity, for inclusive Z boson production and for Z bosons with transverse momenta greater than 150 GeV, and compared to predictions from Monte Carlo event generators that include leading-order multiparton matrix-element (with up to four hard partons in the final state) and next-to-leading-order simulations of Z+1-jet events. The experimental results are corrected for detector effects, and can be compared directly with other QCD models. © 2013 CERN" }