@misc{10481/95955,
year = {2016},
month = {11},
url = {https://hdl.handle.net/10481/95955},
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 p T ≥ 20 GeV and pseudorapidity |η| ≤ 4.4, and at least one having p T ≥ 42.5 GeV, the contribution of hard double-parton scattering is estimated to be f DPS = 0.092 +0.005−0.011 (stat.) +0.033−0.037 (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, σ eff , was determined to be σeff = 14.9 +1.2−1.0 (stat.) +5.1−3.8 (syst.) mb. This result is consistent within the quoted uncertainties with previous measurements of σ eff , performed at centre-of-mass energies between 63 GeV and 8 TeV using various final states, and it corresponds to 21 +7−6% 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.},
organization = {CERN},
organization = {MINECO},
organization = {EPLANET},
organization = {ERC},
organization = {ERDF},
organization = {FP7},
organization = {Horizon 2020},
organization = {Marie Skłodowska-Curie Actions},
organization = {CERCA Programme Generalitat de Catalunya},
organization = {Generalitat Valenciana},
publisher = {Springer Nature},
keywords = {Hadron-Hadron scattering (experiments)},
title = {Study of hard double-parton scattering in four-jet events in pp collisions at √s = 7 TeV with the ATLAS experiment},
doi = {10.1007/JHEP11(2016)110},
author = {Aaboud, M. and Aguilar Saavedra, Juan Antonio and Atlas Collaboration, /},
}