Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/5002
Title: | A search for t(t)over-bar resonances in lepton plus jets events with highly boosted top quarks collected in pp collisions at root s=7 TeV with the ATLAS detector | Authors: | Aad, G. Abajyan, T. Abbott, B. Abdallah, J. Khalek, S. Abdel Abdelalim, A. A. The ATLAS Collaboration Sultansoy, Saleh |
Keywords: | Hadron-Hadron Scattering | Publisher: | Springer | Abstract: | A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb(-1) of proton-proton collisions at root 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 (t) over bar invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the t (t) over bar 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. | URI: | https://doi.org/10.1007/JHEP09(2012)041 https://hdl.handle.net/20.500.11851/5002 |
ISSN: | 1029-8479 |
Appears in Collections: | Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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