Search for resonant top quark plus jet production in tt̄+jets events with the ATLAS detector in pp collisions at √s=7TeV

The ATLAS collaboration

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24 Scopus citations

Abstract

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 t̄q or tq, leading to a resonance within the tt̄+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7fb -1) is used to search for tt̄ 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.

Original languageEnglish
Article number091103
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume86
Issue number9
DOIs
StatePublished - 26 Nov 2012
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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