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

0441704 - FZÚ 2015 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 2902 autorů
Search for resonant top plus jet production in ttˉ + jets events with the ATLAS detector in pp collisions at √s = 7 TeV.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 86, č. 9 (2012), "091103-1"-"091103-7". ISSN 1550-7998
Grant CEP: GA MŠMT LA08032
Institucionální podpora: RVO:68378271
Klíčová slova: pair production * postulated particle * heavy * scattering * jet * associated production * color * singlet * ATLAS * new particle
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 4.691, rok: 2012

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 t¯q or tq, leading to a resonance within the tt¯+jets signature. The full 2011 ATLAS pp collision data set from the LHC (4.7  fb−1) is used to search for tt¯ 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.
Trvalý link: http://hdl.handle.net/11104/0244665