Search for Physics Beyond the Standard Model in Opposite-Sign Dilepton Events at sqrt(s) = 7 TeV

S. Chatrchyan, V. Khachatryan,A. M. Sirunyan, A. Tumasyan,W. Adam, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V. M. Ghete,J. Hammer, S. Hänsel,M. Hoch,N. Hörmann, J. Hrubec, M. Jeitler,G. Kasieczka, W. Kiesenhofer,M. Krammer, D. Liko,I. Mikulec,M. Pernicka, H. Rohringer, R. Schöfbeck,J. Strauss, F. Teischinger,P. Wagner,W. Waltenberger, G. Walzel,E. Widl, C.-E. Wulz,V. Mossolov, N. Shumeiko,J. Suarez Gonzalez,L. Benucci,E. A. De Wolf, X. Janssen, T. Maes,L. Mucibello,S. Ochesanu,B. Roland,R. Rougny, M. Selvaggi,H. Van Haevermaet,P. Van Mechelen,N. Van Remortel, F. Blekman, S. Blyweert, J. D’Hondt,O. Devroede,R. Gonzalez Suarez, A. Kalogeropoulos,J. Maes,M. Maes,W. Van Doninck,P. Van Mulders,G. P. Van Onsem, I. Villella, O. Charaf, B. Clerbaux,G. De Lentdecker,V. Dero,G. H. Hammad,T. Hreus, P. E. Marage, L. Thomas,C. Vander Velde, P. Vanlaer,V. Adler,S. Costantini, M. Grunewald,B. Klein, A. Marinov, J. Mccartin,D. Ryckbosch, F. Thyssen, M. Tytgat, L. Vanelderen, P. Verwilligen,S. Walsh, N. Zaganidis,S. Basegmez,G. Bruno, J. Caudron,L. Ceard,E. Cortina Gil,J. De Favereau De Jeneret,C. Delaere,D. Favart,A. Giammanco,G. Grégoire, J. Hollar,V. Lemaitre,J. Liao, O. Militaru,S. Ovyn,D. Pagano,A. Pin,K. Piotrzkowski,N. Schul,N. Beliy,T. Caebergs,E. Daubie,G. A. Alves,D. De Jesus Damiao,M. E. Pol, M. H. G. Souza,W. Carvalho,E. M. Da Costa,C. De Oliveira Martins,S. Fonseca De Souza, L. Mundim, H. Nogima, V. Oguri,W. L. Prado Da Silva, A. Santoro,S. M. Silva Do Amaral,A. Sznajder,F. Torres Da Silva De Araujo, F. A. Dias,T. R. Fernandez Perez Tomei,E. M. Gregores,C. Lagana, F. Marinho,P. G. Mercadante,S. F. Novaes,Sandra S. Padula,N. Darmenov, L. Dimitrov,V. Genchev, P. Iaydjiev, S. Piperov, M. Rodozov,S. Stoykova, G. Sultanov,V. Tcholakov,R. Trayanov,I. Vankov,A. Dimitrov,M. Dyulendarova, R. Hadjiiska, A. Karadzhinova,V. Kozhuharov, L. Litov, E. Marinova,M. Mateev, B. Pavlov,P. Petkov, J. G. Bian, G. M. Chen, H. S. Chen, C. H. Jiang,D. 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Journal of High Energy Physics（2011）

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摘要

A search is presented for physics beyond the standard model (SM) in final states with opposite-sign isolated lepton pairs accompanied by hadronic jets and missing transverse energy. The search is performed using LHC data recorded with the CMS detector, corresponding to an integrated luminosity of 34 inverse picobarns. No evidence for an event yield beyond SM expectations is found. An upper limit on the non-SM contribution to the signal region is deduced from the results. This limit is interpreted in the context of the constrained minimal supersymmetric model. Additional information is provided to allow testing the exclusion of specific models of physics beyond the SM.

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关键词

Physics beyond the Standard Model,Supersymmetry,Large Hadron Collider,Lepton,Luminosity (scattering theory),Context (language use),Event (particle physics),Hadron,Particle physics,Nuclear physics,Physics

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