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Study of hard double-parton scattering in four-jet events in pp collisions at √s=7 TeV with the ATLAS experiment

SYSNO ASEP	0522566
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Study of hard double-parton scattering in four-jet events in pp collisions at √s=7 TeV with the ATLAS experiment
Author(s)	Aaboud, M. (MA) Aad, G. (FR) Abbott, B. (US) Chudoba, Jiří (FZU-D)_{RID, ORCID} Havránek, Miroslav (FZU-D)_RID Hejbal, Jiří (FZU-D)_{RID, ORCID} Jakoubek, Tomáš (FZU-D)_{RID, ORCID} Kepka, Oldřich (FZU-D)_{RID, ORCID} Kupčo, Alexander (FZU-D)_{RID, ORCID} Kůs, Vlastimil (FZU-D)_RID Lokajíček, Miloš (FZU-D)_{RID, ORCID} Lysák, Roman (FZU-D)_{RID, ORCID} Marčišovský, Michal (FZU-D)_{RID, ORCID} Mikeštíková, Marcela (FZU-D)_{RID, ORCID} Němeček, Stanislav (FZU-D)_{RID, ORCID} Penc, Ondřej (FZU-D)_ORCID Šícho, Petr (FZU-D)_{RID, ORCID} Staroba, Pavel (FZU-D)_{RID, ORCID} Svatoš, Michal (FZU-D)_{RID, ORCID} Taševský, Marek (FZU-D)_{RID, ORCID} Vrba, Václav (FZU-D)_{RID, ORCID}
Number of authors	2856
Article number	110
Source Title	Journal of High Energy Physics. - : Springer - ISSN 1029-8479 Roč. 2016, č. 11 (2016), s. 1-52
Number of pages	52 s.
Language	eng - English
Country	US - United States
Keywords	ATLAS ; CERN LHC Coll ; final state: (4jet) ; neural network ; phase space ; jet: rapidity ; data analysis method ; overlap ; jet: transverse momentum
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000399296300002
EID SCOPUS	84997501206
DOI	10.1007/JHEP11(2016)110
Annotation	Inclusive four-jet events produced in proton-proton collisions at a centre-of-mass energy of s√=7 TeV are analysed for the presence of hard double-parton scattering using data corresponding to an integrated luminosity of 37.3 pb−1, collected with the ATLAS detector at the LHC. The contribution of hard double-parton scattering to the production of four-jet events is extracted using an artificial neural network, assuming that hard double-parton scattering can be approximated by an uncorrelated overlaying of dijet events. For events containing at least four jets with transverse momentum pT ≥ 20 GeV and pseudorapidity \|η\| ≤ 4.4, and at least one having pT ≥ 42.5 GeV, the contribution of hard double-parton scattering is estimated to be fDPS = 0.092+ 0.005− 0.011 (stat.)+ 0.033− 0.037 (syst.).
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2020
Electronic address	http://hdl.handle.net/11104/0307037

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