@article{3073111,
    title = "Search for standard model production of four top quarks in the lepton + jets channel in pp collisions at √s = 8 TeV",
    author = "Woods, N. and Khachatryan, V. and Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Erö, J. and Fabjan, C. and Friedl, M. and Frühwirth, R. and Ghete, V.M. and Hartl, C. 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 Rabady, D. and Rahbaran, B. and Rohringer, H. and Schöfbeck, R. and Strauss, J. and Taurok, A. and Treberer-Treberspurg, W. and Waltenberger, W. and Wulz, C.-E. and Mossolov, V. and Shumeiko, N. and Suarez Gonzalez, J. and Alderweireldt, S. and Bansal, M. and Bansal, S. and Cornelis, T. and De Wolf, E.A. and Janssen, X. and Knutsson, A. and Luyckx, S. and Ochesanu, S. and Rougny, R. and Van De Klundert, M. and Van Haevermaet, H. and Van Mechelen, P. and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and Blyweert, S. and D’Hondt, J. and Daci, N. and Heracleous, N. and Keaveney, J. and Lowette, S. and Maes, M. and Olbrechts, A. and Python, Q. and Strom, D. and Tavernier, S. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G.P. and Villella, I. and Caillol, C. and Clerbaux, B. and De Lentdecker, G. and Dobur, D. and Favart, L. and Gay, A.P.R. and Grebenyuk, A. and Léonard, A. and Mohammadi, A. and Perniè, L. and Reis, T. and Seva, T. and Thomas, L. and Vander Velde, C. and Vanlaer, P. and Wang, J. and Zenoni, F. and Adler, V. and Beernaert, K. and Benucci, L. and Cimmino, A. and Costantini, S. and Crucy, S. and Dildick, S. and Fagot, A. and Garcia, G. and Mccartin, J. and Ocampo Rios, A.A. and Ryckbosch, D. and Salva Diblen, S. and Sigamani, M. and Strobbe, N. and Thyssen, F. and Tytgat, M. and Yazgan, E. and Zaganidis, N. and Basegmez, S. and Beluffi, C. and Bruno, G. and Castello, R. and Caudron, A. and Ceard, L. and Da Silveira, G.G. and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, L. and Giammanco, A. and Hollar, J. and Jafari, A. and Jez, P. and Komm, M. and Lemaitre, V. and Nuttens, C. and Pagano, D. and Perrini, L. and Pin, A. and Piotrzkowski, K. and Popov, A. and Quertenmont, L. and Selvaggi, M. and Vidal Marono, M. and Vizan Garcia, J.M. and Beliy, N. and Caebergs, T. and Daubie, E. and Hammad, G.H. and Aldá, W.L., Jr. and Alves, G.A. and Brito, L. and Correa Martins, M., Jr. and Dos Reis Martins, T. and Mora Herrera, C. and Pol, M.E. and Carvalho, W. and Chinellato, J. 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 Matos Figueiredo, D. and Mundim, L. and Nogima, H. and Prado Da Silva, W.L. and Santaolalla, J. and Santoro, A. and Sznajder, A. and Tonelli Manganote, E.J. and Vilela Pereira, A. and Bernardes, C.A. and Dogra, S. and Fernandez Perez Tomei, T.R. and Gregores, E.M. and Mercadante, P.G. and Novaes, S.F. and Padula, S.S. and Aleksandrov, A. and Genchev, V. and Iaydjiev, P. and Marinov, A. and Piperov, S. and Rodozov, M. and Stoykova, S. and Sultanov, G. and Tcholakov, V. and Vutova, M. and Dimitrov, A. and Glushkov, I. 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 Chen, M. and Du, R. and Jiang, C.H. and Plestina, R. and Tao, J. and Wang, Z. and Asawatangtrakuldee, C. and Ban, Y. and Li, Q. and Liu, S. and Mao, Y. and Qian, S.J. and Wang, D. and Zou, W. and Avila, C. and Chaparro Sierra, L.F. and Florez, C. and Gomez, J.P. and Gomez Moreno, B. and Sanabria, J.C. and Godinovic, N. and Lelas, D. and Polic, D. and Puljak, I. and Antunovic, Z. and Kovac, M. and Brigljevic, V. and Kadija, K. and Luetic, J. and Mekterovic, D. and Sudic, L. and Attikis, A. and Mavromanolakis, G. and Mousa, J. and Nicolaou, C. and Ptochos, F. and Razis, P.A. and Bodlak, M. and Finger, M. and Finger, M., Jr. and Assran, Y. and Ellithi Kamel, A. and Mahmoud, M.A. and Radi, A. and Kadastik, M. and Murumaa, M. and Raidal, M. and Tiko, A. and Eerola, P. and Fedi, G. and 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J. and Belknap, D.A. and Carlsmith, D. and Cepeda, M. and Dasu, S. and Dodd, L. and Duric, S. and Friis, E. and Hall-Wilton, R. and Herndon, M. and Hervé, A. and Klabbers, P. and Lanaro, A. and Lazaridis, C. and Levine, A. and Loveless, R. and Mohapatra, A. and Ojalvo, I. and Perry, T. and Pierro, G.A. and Polese, G. and Ross, I. and Sarangi, T. and Savin, A. and Smith, W.H. and Taylor, D. and Verwilligen, P.",
    journal = "Journal of High Energy Physics",
    year = "2014",
    volume = "2014",
    number = "11",
    publisher = "Springer-Verlag",
    issn = "1126-6708, 1029-8479",
    doi = "10.1007/JHEP11(2014)154",
    abstract = "Abstract: A search is presented for standard model (SM) production of four top quarks (Formula presented.) in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb−1 recorded at a centre-of-mass energy of 8 TeV with the CMS detector at the CERN LHC. The expected cross section for SM (Formula presented.) production is (Formula presented.). A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a 95% confidence level on the cross section for producing four top quarks in the SM, where a limit of 32 ± 17 fb is expected.[Figure not available: see fulltext.]. © 2014, The Author(s)."
}