Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physics Letters B Année : 2012

Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC

G. Aad , C. Biscarat (1) , E. Cogneras (1) , G. Rahal (1) , H. Abreu (2) , N. Andari (2) , C. Arnault (2) , E. Augé (2) , P. Barrillon (2) , M. Benoit (2) , S. Binet (2) , J.-B. Blanchard (2) , C. Bourdarios (2) , D. Breton (2) , C. Collard (2) , C. de La Taille (2) , J.B. de Vivie de Regie (2) , Sara Diglio (2) , L. Duflot (2) , M. Escalier (2) , A.C. Falou (2) , L. Fayard (2) , D. Fournier (2) , J.-F. Grivaz (2) , M. Heller (2) , S. Henrot-Versillé (2) , J. Hrivnac (2) , L. Iconomidou-Fayard (2) , J. Idarraga (2) , M. Kado (2) , A. Lounis (2) , N. Makovec (2) , P. Matricon (2) , F. Niedercorn (2) , L. Poggioli (2) , P. Puzo (2) , A. Renaud (2) , D. Rousseau (2) , X. Ruan (2) , G. Rybkin (2) , J.B. Sauvan (2) , J. Schaarschmidt (2) , A.C. Schaffer (2) , L. Serin (2) , S. Simion (2) , R. Tanaka (2) , J.J. Veillet (2) , I. Vukotic (2) , F. Wicek (2) , D. Zerwas (2) , Zhiqing Zhang (2) , L. Aperio Bella (3) , B. Aubert (3) , N. Berger (3) , J. Colas (3) , M. Delmastro (3) , L. Di Ciaccio (3) , T.K.O. Doan (3) , S. Elles (3) , C. Goy (3) , L. Helary (3) , T. Hryn'Ova (3) , A. Jérémie (3) , S. Jézéquel (3) , M. Kataoka (3) , J. Labbe (3) , R. Lafaye (3) , J. Leveque (3) , V.P. Lombardo (3) , N. Massol (3) , P. Perrodo (3) , E. Petit (3) , H. Przysiezniak (3) , E. Richter-Was (3) , G. Sauvage (3) , E. Sauvan (3) , M. Schwoerer (3) , T. Todorov (3) , D. Tsionou (3) , I. Wingerter-Seez (3) , R. Zitoun (3) , Y. Zolnierowski (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , Reina Coromoto Camacho Toro (4) , Diane Cinca (4) , J. Donini (5) , R. Febbraro (4) , N. Ghodbane (4) , C. Guicheney (4) , H. Liao (4) , D. Pallin (4) , F. Podlyski (4) , C. Santoni (4) , L. P. Says (4) , F. Vazeille (4) , S. Albrand (5) , M.L. Andrieux (5) , Q. Buat (5) , B. Clement (5) , J. Collot (5) , S. Crépé-Renaudin (5) , B. Dechenaux (5) , T. Delemontex (5) , P.A. Delsart (5) , M.H. Genest (5) , J.Y. Hostachy (5) , E. Laisne (5) , F. Ledroit-Guillon (5) , A. Lleres (5) , A. Lucotte (5) , F. Malek (5) , P. Martin (5) , F. Polci (5) , J. Stark (5) , X. Sun (5) , B. Trocmé (5) , J. Wang (5) , C. Weydert (5) , S. Aoun (6) , C. P. Bee (6) , C. Bertella (6) , N. Bousson (6) , J. C. Clémens (6) , Y. Coadou (6) , F. Djama (6) , F. Etienne (6) , L. Feligioni (6) , F. Henry-Couannier (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) , S. Tisserant (6) , J. Toth (6) , F. Touchard (6) , L. Vacavant (6)
G. Aad
E. Cogneras
E. Augé
C. Collard
Sara Diglio
D. Rousseau
Zhiqing Zhang
  • Fonction : Auteur
  • PersonId : 829631
N. Berger
C. Goy
T. Hryn'Ova
Y. Coadou
J. Odier
  • Fonction : Auteur
  • PersonId : 1433897

Résumé

A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb-1 to 4.9 fb-1 of pp collisions collected at sqrt(s) = 7 TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around mH ~ 126 GeV with a local significance of 3.5 standard deviations (sigma). The local significance of H -> gamma gamma, H -> ZZ(*) -> lll'l' and H -> WW(*) -> lvl'v, the three most sensitive channels in this mass range, are 2.8 sigma, 2.1 sigma and 1.4 sigma, respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be ~1.4% or, equivalently 2.2 sigma.

Dates et versions

in2p3-00668181 , version 1 (09-02-2012)

Identifiants

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G. Aad, C. Biscarat, E. Cogneras, G. Rahal, H. Abreu, et al.. Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC. Physics Letters B, 2012, 710, pp.49-66. ⟨10.1016/j.physletb.2012.02.044⟩. ⟨in2p3-00668181⟩
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