A measurement of the forward-backward asymmetry (A(FB)) of Drell-Yan lepton pairs in pp collisions at root s = 7 TeV is presented. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 5 fb(-1). The asymmetry is measured as a function of dilepton mass and rapidity in the dielectron and dimuon channels. Combined results from the two channels are presented, and are compared with the standard model predictions. The A(FB) measurement in the dimuon channel and the combination of the two channels are the first such results obtained at a hadron collider. The measured asymmetries are consistent with the standard model predictions.
Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at root 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;N. Hörmann;J. Hrubec;M. Jeitler;W. Kiesenhofer;V. Knünz;M. Krammer;D. Liko;I. Mikulec;M. Pernicka;B. Rahbaran;C. Rohringer;H. Rohringer;R. Schöfbeck;J. Strauss;A. Taurok;P. Wagner;W. Waltenberger;G. Walzel;E. Widl;C.-E. Wulz;V. Mossolov;N. Shumeiko;J. Suarez Gonzalez;S. Bansal;T. Cornelis;E.A. De Wolf;X. Janssen;S. Luyckx;T. Maes;L. Mucibello;S. Ochesanu;B. Roland;R. Rougny;M. Selvaggi;Z. Staykova;H. Van Haevermaet;P. Van Mechelen;N. Van Remortel;A. Van Spilbeeck;F. Blekman;S. Blyweert;J. DʼHondt;R. Gonzalez Suarez;A. Kalogeropoulos;M. Maes;A. Olbrechts;W. Van Doninck;P. Van Mulders;G.P. Van Onsem;I. Villella;B. Clerbaux;G. De Lentdecker;V. Dero;A.P.R. Gay;T. Hreus;A. Léonard;P.E. Marage;T. Reis;L. Thomas;C. Vander Velde;P. Vanlaer;J. Wang;V. Adler;K. Beernaert;A. Cimmino;S. Costantini;G. Garcia;M. Grunewald;B. Klein;J. Lellouch;A. Marinov;J. Mccartin;A.A. Ocampo Rios;D. Ryckbosch;N. Strobbe;F. Thyssen;M. Tytgat;L. Vanelderen;P. Verwilligen;S. Walsh;E. Yazgan;N. Zaganidis;S. Basegmez;G. Bruno;R. Castello;A. Caudron;L. Ceard;C. Delaere;T. du Pree;D. Favart;L. Forthomme;A. Giammanco;J. Hollar;V. Lemaitre;J. Liao;O. Militaru;C. Nuttens;D. Pagano;L. Perrini;A. Pin;K. Piotrzkowski;N. Schul;J.M. Vizan Garcia;N. Beliy;T. Caebergs;E. Daubie;G.H. Hammad;G.A. Alves;M. Correa Martins Junior;D. De Jesus Damiao;T. Martins;M.E. Pol;M.H.G. Souza;W.L. Aldá Júnior;W. Carvalho;A. Custódio;E.M. Da Costa;C. De Oliveira Martins;S. Fonseca De Souza;D. Matos Figueiredo;L. Mundim;H. Nogima;V. Oguri;W.L. Prado Da Silva;A. Santoro;L. Soares Jorge;A. Sznajder;C.A. Bernardes;F.A. Dias;T.R. Fernandez Perez Tomei;E.M. Gregores;C. Lagana;F. Marinho;P.G. Mercadante;S.F. Novaes;Sandra S. Padula;V. Genchev;P. Iaydjiev;S. Piperov;M. Rodozov;S. Stoykova;G. 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Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at root s=7 TeV
BONACORSI, DANIELE;BRAIBANT, SYLVIE;BRIGLIADORI, LUCA;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;GUIDUCCI, LUIGI;PRIMAVERA, FEDERICA;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;
2013
Abstract
A measurement of the forward-backward asymmetry (A(FB)) of Drell-Yan lepton pairs in pp collisions at root s = 7 TeV is presented. The data sample, collected with the CMS detector, corresponds to an integrated luminosity of 5 fb(-1). The asymmetry is measured as a function of dilepton mass and rapidity in the dielectron and dimuon channels. Combined results from the two channels are presented, and are compared with the standard model predictions. The A(FB) measurement in the dimuon channel and the combination of the two channels are the first such results obtained at a hadron collider. The measured asymmetries are consistent with the standard model predictions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.