Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/4291
Title: Study of hard double-parton scattering in four-jet events in pp collisions at ?s=7 TeV with the ATLAS experiment
Authors: Aaboud, M.
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
The ATLAS Collaboration
Sultansoy, Saleh
Keywords: Hadron-Hadron scattering (experiments)
Issue Date: 2016
Publisher: Springer Verlag
Abstract: 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 |?| ? 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? 0.011 + 0.005(stat.)? 0.037 + 0.033(syst.). After combining this measurement with those of the inclusive dijet and four-jet cross-sections in the appropriate phase space regions, the effective cross-section, ?eff , was determined to be ?eff = 14. 9? 1.0 + 1.2(stat.)? 3.8 + 5.1(syst.) mb. This result is consistent within the quoted uncertainties with previous measurements of ?eff , performed at centre-of-mass energies between 63 GeV and 8 TeV using various final states, and it corresponds to 21? 6 + 7 % of the total inelastic cross-section measured at s=7 TeV. The distributions of the observables sensitive to the contribution of hard double-parton scattering, corrected for detector effects, are also provided.[Figure not available: see fulltext.] © 2016, The Author(s).
URI: https://doi.org/10.1007/JHEP11(2016)110
https://hdl.handle.net/20.500.11851/4291
ISSN: 1126-6708
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Show full item record

CORE Recommender

SCOPUSTM   
Citations

36
checked on Sep 23, 2022

WEB OF SCIENCETM
Citations

40
checked on Sep 24, 2022

Page view(s)

28
checked on Dec 26, 2022

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.