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Journal Articles Physical Review D Year : 2014

Search for a multi-Higgs-boson cascade in WWbb events with the ATLAS detector in pp collisions at sqrt(s) = 8 TeV

G. Aad , S. Albrand (1) , J. Brown (1) , Q. Buat (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (1) , B. Dechenaux (1) , T. Delemontex (1) , P.A. Delsart (1) , C. Gabaldon (1) , M.H. Genest (1) , J.Y. Hostachy (1) , E. Laisne (1) , B.T. Le (1) , F. Ledroit-Guillon (1) , A. Lleres (1) , A. Lucotte (1) , F. Malek (1) , C. Monini (1) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , G. Rahal (2) , S. Abdel Khalek (3) , E. Augé (3) , A. Bassalat (3) , S. Binet (3) , C. Bourdarios (3) , C. de La Taille (3) , J.B. de Vivie de Regie (3) , L. Duflot (3) , M. Escalier (3) , L. Fayard (3) , D. Fournier (3) , J.-F. Grivaz (3) , T. Guillemin (3) , S. Henrot-Versillé (3) , J. Hrivnac (3) , L. Iconomidou-Fayard (3) , J. Idarraga (3) , M. Kado (3) , N. Lorenzo Martinez (3) , A. Lounis (3) , N. Makovec (3) , L. Poggioli (3) , P. Puzo (3) , A. Renaud (3) , D. Rousseau (3) , G. Rybkin (3) , J.B. Sauvan (3) , J. Schaarschmidt (3) , A.C. Schaffer (3) , E. Scifo (3) , L. Serin (3) , S. Simion (3) , R. Tanaka (3) , H.L. Tran (3) , D. Zerwas (3) , Zhiqing Zhang (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , J. Donini (4) , E. Dubreuil (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) , Timothée Theveneaux-Pelzer (4) , Loïc Valery (4) , F. Vazeille (4) , L. Alio (5) , M. Barbero (5) , C. P. Bee (5) , C. Bertella (5) , N. Bousson (5) , J. C. Clémens (5) , Y. Coadou (5) , F. Djama (5) , F. Etienne (5) , L. Feligioni (5) , D. Hoffmann (5) , F. Hubaut (5) , E. B. F. G. Knoops (5) , E. Le Guirriec (5) , B. Li (5) , J. Maurer (5) , E. Monnier (5) , Y. Nagai (5) , J. Odier (5) , P. Pralavorio (5) , A. Rozanov (5) , T. Serre (5) , M. Talby (5) , N. Tannoury (5) , E. Tiouchichine (5) , S. Tisserant (5) , J. Toth (5) , F. Touchard (5) , M. Ughetto (5) , L. Vacavant (5) , N. Berger (6) , J. Colas (6) , M. Delmastro (6) , L. Di Ciaccio (6) , T.K.O. Doan (6) , S. Elles (6) , C. Goy (6) , T. Hryn'Ova (6) , S. Jézéquel (6) , H. Keoshkerian (6) , R. Lafaye (6) , J. Leveque (6) , V.P. Lombardo (6) , N. Massol (6) , P. Perrodo (6) , E. Petit (6) , H. Przysiezniak (6) , G. Sauvage (6) , E. Sauvan (6) , M. Schwoerer (6) , T. Todorov (6) , I. Wingerter-Seez (6) , R. Zitoun (6) , I. Koletsou (6) , O. Simard (6)
G. Aad
E. Augé
D. Rousseau
Zhiqing Zhang
  • Function : Author
  • PersonId : 829631
S. Calvet
Y. Coadou
E. Monnier
N. Berger
C. Goy
T. Hryn'Ova

Abstract

A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson H0, an intermediate charged Higgs boson pair H+-, and a light Higgs boson h0. The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom--antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom--antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3/fb, collected by the ATLAS detector in proton--proton collisions at sort(s)=8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 pb to 43 pb as a function of H0 and H+- masses, with m(h0) fixed at 125 GeV.

Dates and versions

in2p3-00915578 , version 1 (09-12-2013)

Identifiers

Cite

G. Aad, S. Albrand, J. Brown, Q. Buat, B. Clement, et al.. Search for a multi-Higgs-boson cascade in WWbb events with the ATLAS detector in pp collisions at sqrt(s) = 8 TeV. Physical Review D, 2014, 89, pp.032002. ⟨10.1103/PhysRevD.89.032002⟩. ⟨in2p3-00915578⟩
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