Measurements of normalized differential cross-sections for tt¯ production in pp collisions at √s = 7 TeV using the ATLAS detector

0440220 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
Aad, G. - Abajyan, T. - Abbott, B. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2882 autorů
Measurements of normalized differential cross-sections for tt¯ production in pp collisions at √s = 7 TeV using the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 90, č. 7 (2014), "072004-1"-"072004-26". ISSN 1550-7998
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: parton distributions * ATLAS * final-states * lepton * CERN LHC Coll
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.643, rok: 2014

Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the tt¯ system, in proton–proton collisions at a center-of-mass energy of s√=7  TeV. The data set corresponds to an integrated luminosity of 4.6  fb−1, recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton+jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range.
Trvalý link: http://hdl.handle.net/11104/0243337