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Journal Articles Physics Letters B Year : 2012

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

G. Aad , S. Albrand (1) , M.L. Andrieux (1) , Q. Buat (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (1) , B. Dechenaux (1) , T. Delemontex (1) , P.A. Delsart (1) , M.H. Genest (1) , J.Y. Hostachy (1) , E. Laisne (1) , F. Ledroit-Guillon (1) , A. Lleres (1) , A. Lucotte (1) , F. Malek (1) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , J. Wang (1) , C. Weydert (1) , C. Biscarat (2) , E. Cogneras (2) , G. Rahal (2) , F. Vannucci (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , Reina Coromoto Camacho Toro (4) , Diane Cinca (5) , J. Donini (4) , R. Febbraro (4) , N. Ghodbane (4) , Ph. Gris (4) , C. Guicheney (4) , H. Liao (4) , D. Pallin (4) , Daniela Paredes Hernández (4) , F. Podlyski (4) , C. Santoni (4) , F. Vazeille (4) , S. Aoun (6) , C. P. Bee (6) , C. Bertella (6) , N. Bousson (6) , J. C. Clémens (6) , Y. Coadou (6) , P. Delpierre (6) , F. Djama (6) , F. Etienne (6) , L. Feligioni (6) , D. Hoffmann (6) , F. Hubaut (6) , E. B. F. G. Knoops (6) , E. Le Guirriec (6) , B. Li (6) , J. Maurer (6) , E. Monnier (6) , J. Odier (6) , P. Pralavorio (6) , Z. Qian (6) , A. Rozanov (6) , M. Talby (6) , N. Tannoury (6) , J. Toth (6) , E. Tiouchichine (6) , S. Tisserant (6) , F. Touchard (6) , L. Vacavant (6) , L. Aperio Bella (7) , B. Aubert (7) , N. Berger (7) , J. Colas (7) , M. Delmastro (7) , L. Di Ciaccio (7) , T.K.O. Doan (7) , S. Elles (7) , C. Goy (7) , T. Hryn'Ova (7) , S. Jézéquel (7) , M. Kataoka (7) , J. Labbe (7) , R. Lafaye (7) , J. Leveque (7) , V.P. Lombardo (7) , N. Massol (7) , P. Perrodo (7) , E. Petit (7) , H. Przysiezniak (7) , E. Richter-Was (7) , G. Sauvage (7) , E. Sauvan (7) , M. Schwoerer (7) , T. Todorov (7) , D. Tsionou (7) , I. Wingerter-Seez (7) , R. Zitoun (7) , S. Abdel Khalek (8) , H. Abreu (8) , N. Andari (8) , C. Arnault (8) , E. Augé (8) , P. Barrillon (8) , M. Benoit (8) , S. Binet (8) , C. Bourdarios (8) , C. de La Taille (8) , J.B. de Vivie de Regie (8) , L. Duflot (8) , M. Escalier (8) , L. Fayard (8) , D. Fournier (8) , J.-F. Grivaz (8) , S. Henrot-Versillé (8) , J. Hrivnac (8) , L. Iconomidou-Fayard (8) , J. Idarraga (8) , M. Kado (8) , N. Lorenzo Martinez (8) , A. Lounis (8) , N. Makovec (8) , P. Matricon (8) , F. Niedercorn (8) , L. Poggioli (8) , P. Puzo (8) , A. Renaud (8) , D. Rousseau (8) , G. Rybkin (8) , J.B. Sauvan (8) , J. Schaarschmidt (8) , A.C. Schaffer (8) , L. Serin (8) , S. Simion (8) , R. Tanaka (8) , M. Teinturier (8) , J.J. Veillet (8) , I. Vukotic (8) , F. Wicek (8) , D. Zerwas (8) , Zhiqing Zhang (8)
G. Aad
E. Cogneras
F. Vannucci
  • Function : Author
S. Calvet
Diane Cinca
Y. Coadou
N. Berger
C. Goy
T. Hryn'Ova
E. Augé
D. Rousseau

Abstract

A search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities of approximately 4.8 fb^-1 collected at sqrt(s) = 7 TeV in 2011 and 5.8 fb^-1 at sqrt(s) = 8 TeV in 2012. Individual searches in the channels H->ZZ^(*)->llll, H->gamma gamma and H->WW->e nu mu nu in the 8 TeV data are combined with previously published results of searches for H->ZZ^(*), WW^(*), bbbar and tau^+tau^- in the 7 TeV data and results from improved analyses of the H->ZZ^(*)->llll and H->gamma gamma channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of 126.0 +/- 0.4(stat) +/- 0.4(sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7x10^-9, is compatible with the production and decay of the Standard Model Higgs boson.

Dates and versions

in2p3-00722246 , version 1 (01-08-2012)

Identifiers

Cite

G. Aad, S. Albrand, M.L. Andrieux, Q. Buat, B. Clement, et al.. Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. Physics Letters B, 2012, 716, pp.1-29. ⟨10.1016/j.physletb.2012.08.020⟩. ⟨in2p3-00722246⟩
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