Underlying event characteristics and their dependence on jet size of charged-particle jet events in p anti-p collisions at sqrt{s}=7 TeV with the ATLAS detector

0388438 - FZÚ 2013 RIV US eng J - Journal Article
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 … Total 2875 authors
Underlying event characteristics and their dependence on jet size of charged-particle jet events in p anti-p collisions at sqrt{s}=7 TeV with the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 86, č. 7 (2012), "072004-1"-"072004-21". ISSN 1550-7998
R&D Projects: GA MŠMT LA08032
Institutional research plan: CEZ:AV0Z10100502
Keywords : charged particle transverse momentum * charged particle multiplicity * underlying event * ATLAS
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.691, year: 2012
http://arxiv.org/abs/arXiv:1208.0563

Distributions sensitive to the underlying event are studied in events containing one or more charged-particle jets produced in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector at the Large Hadron Collider (LHC). These measurements reflect 800 inverse microbarns of data taken during 2010. In the transverse region, both the multiplicity and the scalar sum of the transverse momentum at fixed pT^JET vary significantly with R, while the average charged-particle transverse momentum has a minimal dependence on R. Predictions from several Monte Carlo tunes have been compared to the data/ the predictions from Pythia 6, based on tunes that have been determined using LHC data, show reasonable agreement with the data, including the dependence on R. Comparisons with other generators indicate that additional tuning of soft-QCD parameters is necessary for these generators.
Permanent Link: http://hdl.handle.net/11104/0217336