New observables for multiple-parton interactions measurements using Z + jets process at the LHC

Abstract

Multiple-parton interactions play a vital role in hadron-hadron collisions. This paper presents a study of the multiple-parton interactions with simulated Z + jets events in proton-proton collisions at a centre-of-mass energy of 13 TeV. The events are simulated with POWHEG followed by hadronization and parton-showering using PYTHIA 8. The events with dimuon invariant mass in the range of 60--120 GeV are selected for the analysis. The charged particle jets, having minimum transverse momentum of 5 GeV and absolute pseudo-rapidity less than 2, are used to construct the observables for measurements of the multiple-parton interactions. The proposed observables and phase-space region presented in this paper found to have enhanced sensitivity to multiple-parton interactions. The increased sensitivity to MPI will be lead to precise constraints on the parameters of the MPI models.

17 pages, 7 figures, Accepted for publication in Physical Review D

References in corpus (9)

• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• Study of double parton scattering using W + 2-jet events in proton-proton collisions at sqrt(s) = 7 TeV
• Measurement of distributions sensitive to the underlying event in inclusive Z-boson production in $pp$ collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Measurement of the underlying event in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV
• A Double Parton Scattering Background to Associate $WH$ and $ZH$ Production at the LHC
• Double parton scattering, diffraction and effective cross section
• Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at sqrt(s) = 2.76 TeV

Cited by in corpus (6)

• Constraints on the double-parton scattering cross section from same-sign W boson pair production in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Measurement of the underlying event activity in inclusive Z boson production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Azimuthal correlations in Z+jets events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Jet fragmentation as a tool to explore double parton scattering using Z-boson + jets processes at the LHC
• Exploring high-purity multi-parton scattering at hadron colliders
• The Drell-Yan Process at NNLL${}^{\prime }$+NNLO using Rapidity Dependent Jet Vetoes