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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

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

Abstract

See paper for full list of authors - 9 pages plus author list (23 pages total), 4 figures, 3 tables, submitted to EPJC, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2012-10/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%

Topics: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Publisher: 'Springer Science and Business Media LLC'
Year: 2013
DOI identifier: 10.1140/epjc/s10052-013-2465-z
OAI identifier: oai:HAL:in2p3-00789723v1
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