Search for a high-mass Higgs boson decaying to a W boson pair in pp collisions at s√=8 TeV with the ATLAS detector - Université Clermont Auvergne Accéder directement au contenu
Article Dans Une Revue Journal of High Energy Physics Année : 2016

Search for a high-mass Higgs boson decaying to a W boson pair in pp collisions at s√=8 TeV with the ATLAS detector

G. Aad (1) , M.K. Ayoub (2) , A. Bassalat (2) , C. Bécot (2) , S. Binet (2) , C. Bourdarios (2) , D. Delgove (2) , J-B. de Vivie De Regie (2) , L. Duflot (2) , M. Escalier (2) , L. Fayard (2) , D. Fournier (2) , E.L. Gkougkousis (2) , J-F. Grivaz (2) , T. Guillemin (2) , F. Hariri (2) , S. Henrot-Versille (2) , J. Hrivnac (2) , L. Iconomidou-Fayard (2) , M. Kado (2) , A. Lounis (2) , N. Makovec (2) , N. Morange (2) , C. Nellist (2) , P. Petroff (2) , L. Poggioli (2) , P. Puzo (2) , A. Renaud (2) , D. Rousseau (2) , G. Rybkin (2) , A.C. Schaffer (2) , E. Scifo (2) , L. Serin (2) , S. Simion (2) , R. Tanaka (2) , D. Zerwas (2) , Zhongkai Zhang (2) , Y. Zhao (2) , D. Boumediene (3) , Emmanuel Busato (3) , D. Calvet (3) , S. Calvet (3) , J. Donini (3) , E. Dubreuil (3) , G. Gilles (3) , Ph. Gris (3) , H. Liao (3) , R. Madar (3) , D. Pallin (3) , S.M. Romano Saez (3) , C. Santoni (3) , D. Simon (3) , Timothée Theveneaux-Pelzer (3) , F. Vazeille (3) , Z. Barnovska (4) , N. Berger (4) , M. Delmastro (4) , L. Di Ciaccio (4) , S. Elles (4) , T. Hryn’ova (4) , S. Jézéquel (4) , I. Koletsou (4) , R. Lafaye (4) , J. Leveque (4) , G. Sauvage (4) , E. Sauvan (4) , O. Simard (4) , T. Todorov (4) , I. Wingerter-Seez (4) , E. Yatsenko (4) , S. Albrand (5) , J. Brown (5) , J. Collot (5) , S. Crépé-Renaudin (5) , P.A. Delsart (5) , C. Gabaldon (5) , M.H. Genest (5) , J.Y. Hostachy (5) , F. Ledroit-Guillon (5) , A. Lleres (5) , A. Lucotte (5) , F. Malek (5) , C. Monini (5) , J. Stark (5) , B. Trocmé (5) , M. Wu , L. Alio (1) , M. Barbero (1) , Y. Coadou (1) , C. Diaconu (1) , Sara Diglio (1) , F. Djama (1) , O. Duccu (1) , L. Feligioni (1) , J. Gao (1) , G.D. Hallewell (1) , F. Hubaut (1) , S.J. Kahn (1) , E. B. F. G. Knoops (1) , E. Le Guirriec (1) , J. Liu (1) , K. Liu (1) , D. Madaffari (1) , K. Mochizuki (1) , E. Monnier (1) , S. Muanza (1) , Y. Nagai (1) , E. Nagy (1) , P. Pralavorio (1) , A. Rozanov (1) , T. Serre (1) , M. Talby (1) , R.E. Ticse Torres (1) , E. Tiouchichine (1) , S. Tisserant (1) , J. Toth (1) , F. Touchard (1) , L. Vacavant (1)
G. Aad
D. Rousseau
S. Calvet
N. Berger
T. Hryn’ova
M. Wu
  • Fonction : Auteur
Y. Coadou

Résumé

A search for a high-mass Higgs boson H is performed in the H→WW→ℓνℓν and H→WW→ℓνqq decay channels using pp collision data corresponding to an integrated luminosity of 20.3 fb−1 collected at s√= 8 TeV by the ATLAS detector at the Large Hadron Collider. No evidence of a high-mass Higgs boson is found. Limits on σH×BR(H→WW) as a function of the Higgs boson mass mH are determined in three different scenarios: one in which the heavy Higgs boson has a narrow width compared to the experimental resolution, one for a width increasing with the boson mass and modeled by the complex-pole scheme following the same behavior as in the Standard Model, and one for intermediate widths. The upper range of the search is mH=1500 GeV for the narrow-width scenario and mH=1000 GeV for the other two scenarios. The lower edge of the search range is 200−300 GeV and depends on the analysis channel and search scenario. For each signal interpretation, individual and combined limits from the two WW decay channels are presented. At mH=1500 GeV, the highest-mass point tested, σH×BR(H→WW) for a narrow-width Higgs boson is constrained to be less than 21 fb and 6.0 fb at 95% CL for the gluon fusion and vector-boson fusion production modes, respectively.

Dates et versions

in2p3-01191602 , version 1 (02-09-2015)

Identifiants

Citer

G. Aad, M.K. Ayoub, A. Bassalat, C. Bécot, S. Binet, et al.. Search for a high-mass Higgs boson decaying to a W boson pair in pp collisions at s√=8 TeV with the ATLAS detector. Journal of High Energy Physics, 2016, 01, pp.032. ⟨10.1007/JHEP01(2016)032⟩. ⟨in2p3-01191602⟩
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