Measurements of underlying-event properties using neutral and charged particles in pp collisions at 900 GeV and 7 TeV with the ATLAS detector at the LHC

0373831 - FZÚ 2013 RIV DE eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Gallus, Petr - Gunther, Jaroslav - Hruška, I. - Juránek, Vojtěch - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Kvasnička, Jiří - Lipinský, L. - Lokajíček, Miloš - Marčišovský, Michal - Mikeštíková, Marcela - Myška, Miroslav - Němeček, Stanislav - Panušková, M. - Růžička, Pavel - Schovancová, Jaroslava - Šícho, Petr - Staroba, Pavel - Taševský, Marek - Tic, Tomáš - Valenta, J. - Vrba, Václav … Total 3043 authors
Measurements of underlying-event properties using neutral and charged particles in pp collisions at 900 GeV and 7 TeV with the ATLAS detector at the LHC.
European Physical Journal C. Roč. 71, č. 5 (2011), 1-24. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT LA08015; GA MŠMT LA08032
Institutional research plan: CEZ:AV0Z10100502
Keywords : underlying event * charged particle: particle flow * neutral particle: particle flow * correlation * Monte Carlo * calorimeter: cluster * ATLAS * CERN
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 3.631, year: 2011

We present first measurements of charged and neutral particle-flow correlations in pp collisions using the ATLAS calorimeters. Data were collected in 2009 and 2010 at centre-of-mass energies of 900 GeV and 7 TeV. Events were selected using a minimum-bias trigger which required a charged particle in scintillation counters on either side of the interaction point. Particle flows, sensitive to the underlying event, are measured using clusters of energy in the ATLAS calorimeters, taking advantage of their fine granularity. No Monte Carlo generator used in this analysis can accurately describe the measurements. The results are independent of those based on charged particles measured by the ATLAS tracking systems and can be used to constrain the parameters of Monte Carlo generators.
Permanent Link: http://hdl.handle.net/11104/0206891