Data di Pubblicazione:
2012
Abstract:
Results are presented from searches for the standard model Higgs boson in proton–proton collisions at sqrt(s)=7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 fb−1 at 7 TeV and 5.3 fb−1 at 8 TeV. The search is performed in five decay modes: γγ, ZZ, W+W−, τ+τ−, and bbbar. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, γγ and ZZ; a fit to these signals gives a mass of 125.3±0.4(stat.)±0.5(syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
S. Chatrchyan;V. Khachatryan;A.M. Sirunyan;A. Tumasyan;W. Adam;E. Aguilo;T. Bergauer;M. Dragicevic;J. Erö;C. Fabjan;M. Friedl;R. Frühwirth;V.M. Ghete;J. Hammer;M. Hoch;N. Hörmann;J. Hrubec;M. Jeitler;W. Kiesenhofer;V. Knünz;M. Krammer;I. Krätschmer;D. Liko;W. Majerotto;I. Mikulec;M. Pernicka;B. Rahbaran;C. Rohringer;H. Rohringer;R. Schöfbeck;J. Strauss;F. Szoncsó;A. Taurok;W. Waltenberger;G. Walzel;E. Widl;C.-E. Wulz;V. Chekhovsky;I. Emeliantchik;A. Litomin;V. Makarenko;V. Mossolov;N. Shumeiko;A. Solin;R. Stefanovitch;J. Suarez Gonzalez;A. Fedorov;M. Korzhik;O. Missevitch;R. Zuyeuski;M. Bansal;S. Bansal;W. Beaumont;T. Cornelis;E.A. De Wolf;D. Druzhkin;X. Janssen;S. Luyckx;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;O. Devroede;R. Gonzalez Suarez;R. Goorens;A. Kalogeropoulos;M. Maes;A. Olbrechts;S. Tavernier;W. Van Doninck;L. Van Lancker;P. Van Mulders;G.P. Van Onsem;I. Villella;B. Clerbaux;G. De Lentdecker;V. Dero;J.P. Dewulf;A.P.R. Gay;T. Hreus;A. Léonard;P.E. Marage;A. Mohammadi;T. Reis;S. Rugovac;L. Thomas;C. Vander Velde;P. Vanlaer;J. Wang;J. Wickens;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;S. Walsh;E. Yazgan;N. Zaganidis;S. Basegmez;G. Bruno;R. Castello;L. Ceard;J. De Favereau De Jeneret;C. Delaere;P. Demin;T. du Pree;D. Favart;L. Forthomme;A. Giammanco;G. Grégoire;J. Hollar;V. Lemaitre;J. Liao;O. Militaru;C. Nuttens;D. Pagano;A. Pin;K. Piotrzkowski;N. Schul;J.M. Vizan Garcia;N. Beliy;T. Caebergs;E. Daubie;G.H. Hammad;G.A. Alves;L. Brito;M. Correa Martin;T. Martins;M.E. Pol;M.H.G. Souza;W.L. Aldá Júnior;W. Carvalho;A. Custódio;E.M. Da Costa;D. De Jesus Damiao;C. De Oliveira Martins;S. Fonseca De Souza;D. Matos Figueiredo;L. Mundim;H. Nogima;V. Oguri;W.L. Prado Da Silva;A. Santoro;A. Sznajder;A. Vilela Pereira;T.S. Anjos;C.A. Bernardes;F.A. Dias;T.R. Fernandez Perez Tomei;E.M. Gregores;R.L. Iope;C. Lagana;S.M. Lietti;F. Marinho;P.G. Mercadante;S.F. Novaes;Sandra S. Padula;L. Dimitrov;V. Genchev;P. Iaydjiev;S. Piperov;M. Rodozov;S. Stoykova;G. Sultanov;V. Tcholakov;R. Trayanov;I. Vankov;M. Vutova;C. Roumenin;D. Uzunova;R. Zahariev;A. Dimitrov;R. Hadjiiska;V. Kozhuharov;L. Litov;B. Pavlov;P. Petkov;J.G. Bian;G.M. Chen;H.S. Chen;K.L. He;C.H. Jiang;W.G. Li;D. Liang;S. Liang;X. Meng;G. Sun;H.S. Sun;J. Tao;J. Wang;X. Wang;Z. Wang;H. Xiao;M. Xu;M. Yang;J. Zang;X. Zhang;Z. Zhang;Z. Zhang;W.R. Zhao;Z. Zhu;C. Asawatangtrakuldee;Y. Ban;J. Cai;S. Guo;Y. Guo;W. Li;H.T. Liu;S. Liu;Y. Mao;S.J. Qian;H. Teng;D. Wang;Y.L. Ye;L. Zhang;B. Zhu;W. Zou;C. Avila;J.P. Gomez;B. Gomez Moreno;A.F. Osorio Oliveros;J.C. Sanabria;N. Godinovic;D. Lelas;R. Plestina;D. Polic;I. Puljak;Z. Antunovic;M. Kovac;V. Brigljevic;S. Duric;K. Kadija;J. Luetic;S. Morovic;A. Attikis;M. Galanti;G. Mavromanolakis;J. Mousa;C. Nicolaou;F. Ptochos;P.A. Razis;M. Finger;M. Finger;A. Aly;Y. Assran;A. Awad;S. Elgammal;A. Ellithi Kamel;S. Khalil;M.A. Mahmoud;A. Mahrous;A. Radi;A. Hektor;M. Kadastik;K. Kannike;M. Müntel;M. Raidal;L. Rebane;A. Strumia;A. Tiko;P. Eerola;G. Fedi;M. Voutilainen;E. Anttila;J. Härkönen;A. Heikkinen;V. Karimäki;H.M. Katajisto;R. Kinnunen;M.J. Kortelainen;M. Kotamäki;T. Lampén;K. Lassila-Perini;S. Lehti;T. Lindén;P. Luukka;T. Mäenpää;T. Peltola;E. Tuominen;J. Tuominiemi;E. Tuovinen;D. Ungaro;T.P. Vanhala;L. Wendland;K. Banzuzi;A. Karjalainen;A. Korpela;T. Tuuva;M. Anfreville;M. Besancon;S. Choudhury;M. Dejardin;D. Denegri;B. Fabbro;J.L. Faur
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