Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at sqrt{s} = 7 TeV

0389832 - FZÚ 2013 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - 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 2863 autorů
Measurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at sqrt{s} = 7 TeV.
European Physical Journal C. Roč. 72, č. 11 (2012), s. 1-22. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT LA08032
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: event shapes * jets * LHC * ATLAS * parton showers
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.247, rok: 2012
http://arxiv.org/abs/arXiv:1206.2135

A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadronic jets are studied in inclusive multi-jet events in 35 pb^-1 of integrated luminosity at a center-of-mass energy of sqrt(s) = 7 TeV. These measurements are compared to predictions by three Monte Carlo event generators containing leading-logarithmic parton showers matched to leading order matrix elements for 2 to 2 and 2 to n (n=2,...6) scattering. Measurements of the third-jet resolution parameter, aplanarity, thrust, sphericity, and transverse sphericity are generally well described. The mean value of each event shape variable is evaluated as a function of the average momentum of the two leading jets pT1 and pT2, with a mean pT approaching 1 TeV.
Trvalý link: http://hdl.handle.net/11104/0218717