Search for a Higgs boson decaying into a Z and a photon in pp collisions at root s=7 and 8 TeV
Articolo
Data di Pubblicazione:
2013
Abstract:
A search for a Higgs boson decaying into a Z boson and a photon is described. The analysis is performed using proton-proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass energies of 7 TeV and 8 TeV, corresponding to integrated luminosities of 5.0 fb(-1) and 19.6 fb(-1), respectively. The selected events are required to have opposite-sign electron or muon pairs. No excess above standard model predictions has been found in the 120-160 GeV mass range and the first limits on the Higgs boson production cross section times the H -> Z gamma branching fraction at the LHC have been derived. The observed at 95% confidence level limits are between about 4 and 25 times the standard model cross section times the branching fraction. For a standard model Higgs boson mass of 125 GeV the expected limit at the 95% confidence level is 10 and the observed limit is 9.5. Models predicting the Higgs boson production cross section times the H -> Z gamma branching fraction to be larger than one order of magnitude of the standard model prediction are excluded for most of the 125-157 GeV mass range.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
CMS; LHC
Elenco autori:
S. Chatrchyan;V. Khachatryan;A. M. Sirunyan;A. Tumasyan;W. Adam;T. Bergauer;M. Dragicevic;J. Ero;C. Fabjan;M. Friedl;R. Fruhwirth;V. M. Ghete;N. Hormann;J. Hrubec;M. Jeitler;W. Kiesenhofer;V. Knunz;M. Krammer;I. Kratschmer;D. Liko;I. Mikulec;D. Rabady;B. Rahbaran;C. Rohringer;H. Rohringer;R. Schofbeck;J. Strauss;A. Taurok;W. Treberer-Treberspurg;W. Waltenberger;C. . E.;V. Mossolov;N. Shumeiko;J. S. Gonzalez;S. Alderweireldt;M. Bansal;S. Bansal;T. Cornelis;E. A. De;X. Janssen;A. Knutsson;S. Luyckx;L. Mucibello;S. Ochesanu;B. Roland;R. Rougny;Z. Staykova;H. V. Haevermaet;P. V. Mechelen;N. V. Remortel;A. V. Spilbeeck;F. Blekman;S. Blyweert;J. D'Hondt;A. Kalogeropoulos;J. Keaveney;M. Maes;A. Olbrechts;S. Tavernier;W. V. Doninck;P. V. Mulders;G. P. Van;I. Villella;C. Caillol;B. Clerbaux;G. D. Lentdecker;L. Favart;A. P. R.;T. Hreus;A. Leonard;P. E. Marage;A. Mohammadi;L. Pernie;T. Reis;T. Seva;L. Thomas;C. V. Velde;P. Vanlaer;J. Wang;V. Adler;K. Beernaert;L. Benucci;A. Cimmino;S. Costantini;S. Dildick;G. Garcia;B. Klein;J. Lellouch;A. Marinov;J. Mccartin;A. A. Ocampo;D. Ryckbosch;M. Sigamani;N. Strobbe;F. Thyssen;M. Tytgat;S. Walsh;E. Yazgan;N. Zaganidis;S. Basegmez;C. Beluffi;G. Bruno;R. Castello;A. Caudron;L. Ceard;G. G. Da;C. Delaere;T. d. Pree;D. Favart;L. Forthomme;A. Giammanco;J. Hollar;P. Jez;V. Lemaitre;J. Liao;O. Militaru;C. Nuttens;D. Pagano;A. Pin;K. Piotrzkowski;A. Popov;M. Selvaggi;J. M. Vizan;N. Beliy;T. Caebergs;E. Daubie;G. H. Hammad;G. A. Alves;M. C. Martins;T. Martins;M. E. Pol;M. H. G.;W. L. Alda;W. Carvalho;J. Chinellato;A. Custodio;E. M. Da;D. D. Jesus;C. D. Oliveira;S. F. De;H. Malbouisson;M. Malek;D. M. Figueiredo;L. Mundim;H. Nogima;W. L. Prado;A. Santoro;A. Sznajder;E. J. Tonelli;A. V. Pereira;C. A. Bernardes;F. A. Dias;T. R. Fernandez;E. M. Gregores;C. Lagana;P. G. Mercadante;S. F. Novaes;S. S. Padula;V. Genchev;P. Iaydjiev;S. Piperov;M. Rodozov;G. Sultanov;M. Vutova;A. Dimitrov;R. Hadjiiska;V. Kozhuharov;L. Litov;B. Pavlov;P. Petkov;J. G. Bian;G. M. Chen;H. S. Chen;C. H. Jiang;D. Liang;S. Liang;X. Meng;J. Tao;J. Wang;X. Wang;Z. Wang;H. Xiao;M. Xu;C. Asawatangtrakuldee;Y. Ban;Y. Guo;Q. Li;W. Li;S. Liu;Y. Mao;S. J. Qian;D. Wang;L. Zhang;W. Zou;C. Avila;C. A. Carrillo;L. F. Chaparro;J. P. Gomez;B. G. Moreno;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;D. Mekterovic;S. Morovic;L. Tikvica;A. Attikis;G. Mavromanolakis;J. Mousa;C. Nicolaou;F. Ptochos;P. A. Razis;M. Finger;J. F. M.;A. A. Abdelalim;Y. Assran;S. Elgammal;A. E. Kamel;M. A. Mahmoud;A. Radi;M. Kadastik;M. Mantel;M. Murumaa;M. Raidal;L. Rebane;A. Tiko;P. Eerola;G. Fedi;M. Voutilainen;J. Harkonen;V. Karimaki;R. Kinnunen;M. J. Kortelainen;T. Lampen;K. Lassila-Perini;S. Lehti;T. Linden;T. Maenpaa;T. Peltola;E. Tuominen;J. Tuominiemi;E. Tuovinen;L. Wendland;T. Tuuva;M. Besancon;E. Couderc;M. Dejardin;D. Denegri;B. Fabbro;J. L. Faure;F. Ferri;S. Ganjour;A. Givernaud;P. Gras;G. H. de;P. Jarry;E. Locci;J. Malcles;L. Millischer;A. Nayak;J. Rander;A. Rosowsky;M. Titov;S. Baffloni;F. Beaudette;L. Benhabib;M. Bluj;P. Busson;C. Chariot;N. Daci;T. Dahms;M. Dalchenko;L. Dobrzynski;A. Florent;R. G. de;M. Haguenauer;P. Mine;C. Mironov;I. N. Naranjo;M. Nguyen;C. Ochando;P. Paganini;D. Sabes;R. Salerno;Y. Sirois;C. Veelken;A. Zabi;J. . L.;J. Andrea;D. Bloch;J. . M.;E. C. Chabert;C. Collard;E. Conte;F. Drouhin;J. . C.;D. Gele;U. Goerlach;C. Goetzmann;P. Juillot;A. . C.;P. V. Hove;S. Gadrat;S. Beauceron;N. Beaupere;G. Boudoul;S. Brochet;J. Chasserat;R. Chierici;D. Contardo;P. Depasse;H. E. Mamouni;J. Fay;S. Gascon;M. Gouzevitch;B. Ille;T. Kurca;M. Lethuillier;L. Mir
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