Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC

0389862 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Aad, G. - Abajyan, T. - Abbott, B. - Böhm, Jan - Chudoba, Jiří - Gallus, Petr - Gunther, Jaroslav - Jakoubek, Tomáš - Juránek, Vojtěch - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Růžička, Pavel - Schovancová, Jaroslava - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Tic, Tomáš - Valenta, J. - Vrba, Václav - Zeman, Martin … celkem 3085 autorů
Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC.
Journal of High Energy Physics. Roč. 2012, č. 11 (2012), 1-18. ISSN 1126-6708
Grant CEP: GA MŠMT LA08032
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: ATLAS * pp scattering * lepton * heavy quark * pair production * supersymmetry
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.618, rok: 2012
http://arxiv.org/abs/arXiv:1209.4186

The results of a search for direct pair production of heavy top-quark partners in 4.7 fb-1 of integrated luminosity from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.
Trvalý link: http://hdl.handle.net/11104/0218754