Measurement of event-shape observables in Z→ℓ+ℓ− events in pp collisions at √s = 7 TeV with the ATLAS detector at the LHC

0465820 - FZÚ 2017 RIV US eng J - Journal Article
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2869 authors
Measurement of event-shape observables in Z→ℓ+ℓ− events in pp collisions at √s = 7 TeV with the ATLAS detector at the LHC.
European Physical Journal C. Roč. 76, č. 7 (2016), 1-54, č. článku 375. ISSN 1434-6044. E-ISSN 1434-6052
Institutional support: RVO:68378271
Keywords : CERN LHC Coll * numerical calculations * Monte Carlo * thrust * ATLAS * event shape analysis * underlying event * kinematics
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 5.297, year: 2016

Event-shape observables measured using charged particles in inclusive Z-boson events are presented, using the electron and muon decay modes of the Z bosons. The measurements are based on an integrated luminosity of 1.1 fb−1 of proton–proton collisions recorded by the ATLAS detector at the LHC at a centre-of-mass energy s√=7 TeV . Charged-particle distributions, excluding the lepton–antilepton pair from the Z-boson decay, are measured in different ranges of transverse momentum of the Z boson. Distributions include multiplicity, scalar sum of transverse momenta, beam thrust, transverse thrust, spherocity, and F -parameter, which are in particular sensitive to properties of the underlying event at small values of the Z-boson transverse momentum.


Permanent Link: http://hdl.handle.net/11104/0264268