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Search for a light charged Higgs boson in the decay channel H+ -> c(s)over-bar in t(t)over-bar events using pp collisions at root s=7 TeV with the ATLAS detector

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Search for a light charged Higgs boson in the decay channel H+ -> c(s)over-bar in t(t)over-bar events using pp collisions at root s=7 TeV with the ATLAS detector

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ATLAS Collaboration; Cabrera Urbán, Susana; Castillo Giménez, María Victoria; Costa Mezquita, María José; Fassi, Farida; Ferrer Soria, Antonio; Fiorini, Luca; Fuster Verdú, Juan A.; García García, Carmen; García Navarro, José Enrique; González de la Hoz, Santiago; Hernández Jiménez, Yesenia; Higón Rodríguez, Emilio; Irles Quiles, Adrián; Kaci, Mohammed; Lacasta Llácer, Carlos; Lacuesta Miquel, Vicente; March Ruiz, Luis; Martí García, Salvador; Miñano Moya, Mercedes; Mitsou, Vasiliki; Moles Valls, Regina; Moreno Llácer, María; Oliver García, Elena; Pedraza López, Sebastián; Pérez García-Estañ, María Teresa; Romero Adam, E.; Ros Martínez, Eduardo; Salt Cairols, José; Sánchez Martínez, Victoria; Soldevila, U.; Sánchez Martínez, Javier; Torró Pastor, Emma; Valero Biot, Alberto; Valladolid Gallego, E.; Valls Ferrer, Juan Antonio; Villaplana Pérez, Miguel; Vos, Marcel
Aquest document és un/a article, creat/da en: 2013

A search for a charged Higgs boson (H+) in t (t) over bar decays is presented, where one of the top quarks decays via t -> H(+)b, followed by H+ -> two jets (c (s) over bar). 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 root s = 7 TeV 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 B(H+ -> c (s) over bar) = 100 %.
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