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arXiv · 1602.05392

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

M. Bansal·S. Bansal·R. Kumar·J. B. Singh
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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.

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M. Bansal, S. Bansal, R. Kumar, J. B. Singh. 2016-02-17. New observables for multiple-parton interactions measurements using Z + jets process at the LHC. https://doi.org/10.1103/physrevd.93.054019

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