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01580 am a22002053u 4500 |
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86206 |
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|a Taylor, Frank E.
|e author
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|a Massachusetts Institute of Technology. Department of Physics
|e contributor
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|a Taylor, Frank E.
|e contributor
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|a A search for t[bar over t] resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7 TeV with the ATLAS detector
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|b Springer-Verlag,
|c 2014-04-17T18:56:19Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/86206
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|a A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb[superscript −1] of proton-proton collisions at √s = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed t[bar over t] invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the t[bar over t] production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.
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|a United States. Dept. of Energy
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|a National Science Foundation (U.S.)
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|a Brookhaven National Laboratory
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|a en_US
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|a Article
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|t Journal of High Energy Physics
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