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Search for a light charged Higgs boson in the decay channel H+->csbar in ttbar events using pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

G. Aad L. Aperio Bella 1 B. Aubert 1 N. Berger 1 J. Colas 1 M. Delmastro 1 L. Di Ciaccio 1 T.K.O. Doan 1 S. Elles 1 C. Goy 1 T. Hryn'Ova 1 S. Jézéquel 1 H. Keoshkerian 1 R. Lafaye 1 J. Leveque 1 V.P. Lombardo 1 M. Maeno 1 N. Massol 1 P. Perrodo 1 E. Petit 1 H. Przysiezniak 1 E. Richter-Was 1 G. Sauvage 1 E. Sauvan 1 M. Schwoerer 1 T. Todorov 1 D. Tsionou 1 I. Wingerter-Seez 1 R. Zitoun 1 C. Biscarat 2 G. Rahal 2 D. Boumediene 3 Emmanuel Busato 3 D. Calvet 3 S. Calvet 3 Reina Coromoto Camacho Toro 3 Diane Cinca 4 J. Donini 3 E. Dubreuil 3 Ph. Gris 3 N. Ghodbane 3 C. Guicheney 3 H. Liao 3 D. Pallin 3 Daniela Paredes Hernández 3 F. Podlyski 3 C. Santoni 3 Loïc Valery 3 F. Vazeille 3 S. Abdel Khalek 5 N. Andari 5 E. Augé 5 M. Benoit 5 S. Binet 5 C. Bourdarios 5 C. de la Taille 5 J.B. de Vivie de Regie 5 L. Duflot 5 M. Escalier 5 L. Fayard 5 D. Fournier 5 J.-F. Grivaz 5 S. Henrot-Versillé 5 J. Hrivnac 5 L. Iconomidou-Fayard 5 J. Idarraga 5 M. Kado 5 N. Lorenzo Martinez 5 A. Lounis 5 N. Makovec 5 F. Niedercorn 5 L. Poggioli 5 P. Puzo 5 A. Renaud 5 D. Rousseau 5 G. Rybkin 5 J.B. Sauvan 5 J. Schaarschmidt 5 A.C. Schaffer 5 L. Serin 5 S. Simion 5 R. Tanaka 5 M. Teinturier 5 J.J. Veillet 5 D. Zerwas 5 Zhen Zhang 5 S. Albrand 6 M.L. Andrieux 6 Q. Buat 6 B. Clement 6 J. Collot 6 S. Crépé-Renaudin 6 B. Dechenaux 6 T. Delemontex 6 P.A. Delsart 6 M.H. Genest 6 J.Y. Hostachy 6 E. Laisne 6 F. Ledroit-Guillon 6 A. Lleres 6 A. Lucotte 6 F. Malek 6 J. Stark 6 X. Sun 6 B. Trocmé 6 C. Weydert 6 S. Aoun 7 C. P. Bee 7 C. Bertella 7 N. Bousson 7 J. C. Clémens 7 Y. Coadou 7 F. Djama 7 F. Etienne 7 L. Feligioni 7 D. Hoffmann 7 F. Hubaut 7 E. B. F. G. Knoops 7 E. Le Guirriec 7 B. Li 7 J. Maurer 7 E. Monnier 7 J. Odier 7 P. Pralavorio 7 A. Rozanov 7 M. Talby 7 N. Tannoury 7 E. Tiouchichine 7 S. Tisserant 7 J. Toth 7 F. Touchard 7 M. Ughetto 8, 7 L. Vacavant 7
Abstract : A search for a charged Higgs boson (H+) in ttbar decays is presented, where one of the top quarks decays via t->H+b, followed by H+->two jets (csbar). The other top quark decays to Wb, where the W boson then decays into a lepton (e/mu) and a neutrino. The data were recorded in pp collisions at sqrt(s) = 7TeV by the ATLAS detector at the LHC in 2011, and correspond to an integrated luminosity of 4.7 fb-1. With no observation of a signal, 95% confidence level (CL) upper limits are set on the decay branching ratio of top quarks to charged Higgs bosons varying between 5% and 1% for H+ masses between 90 GeV and 150 GeV, assuming Br(H+->csbar)=100%.
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Submitted on : Monday, February 18, 2013 - 4:46:18 PM
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G. Aad, L. Aperio Bella, B. Aubert, N. Berger, J. Colas, et al.. Search for a light charged Higgs boson in the decay channel H+->csbar in ttbar events using pp collisions at sqrt(s) = 7 TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2013, 73, pp.2465. ⟨10.1140/epjc/s10052-013-2465-z⟩. ⟨in2p3-00789723⟩

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