Title:
A Search for ttˉ Resonances in the Lepton Plus Jets Channel in 200 pb−1 of pp Collisions at s√=7 TeV
Collaboration:
Atlas
Journal:
inSpire URL:
DOI:
Description:
A search for top quark pair (ttˉ) resonances in the lepton plus jets final states has been performed with the ATLAS experiment at the LHC. The search uses a data sample corresponding to an integrated luminosity of 200 pb−1, and was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found. Using the reconstructed ttˉ mass spectrum, limits are set on the production cross-section times branching ratio to ttˉ for narrow and wide resonances. For narrow Z′ models, the observed 95\% C.L. limits range from approximately 38~pb to 3.2~pb for masses going from mZ′= 500 GeV to mZ′= 1300 GeV. In Randall-Sundrum models, Kaluza-Klein gluons with masses below 650 GeV are excluded at 95\% C.L.
Owner:
Unclaimed
Run Conditions
Name:
7 TeV
Description:
200 pb−1