6533b823fe1ef96bd127f342
RESEARCH PRODUCT
Search for resonant top quark plus jet production in tt¯+jets events with the ATLAS detector in pp collisions at s√=7 TeV
Atlas CollaborationVasiliki MitsouJuan A. Fuster VerdúAntonio Ferrer SoriaMaría Victoria Castillo GiménezSusana Cabrera UrbánCarmen García GarcíaEmilio Higón RodríguezSalvador Martí GarcíaEduardo Ros MartínezSantiago González De La HozJosé Salt CairolsJuan Antonio Valls FerrerMohammed KaciLuca FioriniYesenia Hernández JiménezCarlos Lacasta LlácerSebastián Pedraza Lópezsubject
Col·lisions (Física nuclear)High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclearPartícules (Física nuclear)Detectors de radiaciódescription
This paper presents a search for a new heavy particle produced in association with a top or antitop quark. Two models in which the new heavy particle is a color singlet or a color triplet are considered, decaying, respectively, to (t)over-barq or tq, leading to a resonance within the t(t)over-bar + jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7 fb(-1)) is used to search for t(t)over-bar events produced in association with jets, in which one of the W bosons from the top quarks decays leptonically and the other decays hadronically. The data are consistent with the Standard Model expectation, and a new particle with mass below 430 Gev for both W' boson and color triplet models is excluded at 95% confidence level, assuming unit right-handed coupling.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |