Underlying event sensitive observables in Drell-Yan production using GENEVA

Abstract

We present an extension of the GENEVA Monte Carlo framework to include multiple parton interactions (MPI) provided by PYTHIA8. This allows us to obtain predictions for underlying-event sensitive measurements in Drell-Yan production, in conjunction with GENEVA's fully-differential NNLO calculation, NNLL' resummation for the 0-jet resolution variable (beam thrust), and NLL resummation for the 1-jet resolution variable. We describe the interface with the parton shower algorithm and MPI model of PYTHIA8, which preserves both the precision of partonic N-jet cross sections in GENEVA as well as the shower accuracy and good description of soft hadronic physics of PYTHIA8. We present results for several underlying-event sensitive observables and compare to data from ATLAS and CMS as well as to standalone PYTHIA8 predictions. This includes a comparison with the recent ATLAS measurement of the beam thrust spectrum, which provides a potential avenue to fully disentangle the physical effects from the primary hard interaction, primary soft radiation, multiple parton interactions, and nonperturbative hadronization.

23 pages, 11 figures. v3: version accepted by EPJC

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• Measurement of the underlying event in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV
• Dissecting Soft Radiation with Factorization
• Rapidity-Dependent Jet Vetoes
• Angular correlations in the double Drell-Yan process
• Origins of parton correlations in nucleon and multi-parton collisions
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Cited by in corpus (15)

• Higgsstrahlung at NNLL${}^{\prime }+$NNLO Matched to Parton Showers in GENEVA
• Factorization and Resummation for Massive Quark Effects in Exclusive Drell-Yan
• Matching NNLO to parton shower using N${}^3$LL colour-singlet transverse momentum resummation in GENEVA
• Towards NNLO+PS Matching with Sector Showers
• Precise predictions for photon pair production matched to parton showers in GENEVA
• Factorization Violation and Scale Invariance
• Higher-order EW corrections in ZZ and ZZj production at the LHC
• Double Higgs production at NNLO interfaced to parton showers in GENEVA
• Breakdown of the naive parton model in super-weak scale collisions
• Status and developments of event generators
• Canonical Quantization of Massive Symmetric Rank-Two Tensor in String Theory
• Master integrals for mixed QCD-QED corrections to charged-current Drell-Yan production of a massive charged lepton
• Azimuthal correlations in Z+jets events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Exploring high-purity multi-parton scattering at hadron colliders
• The Drell-Yan Process at NNLL${}^{\prime }$+NNLO using Rapidity Dependent Jet Vetoes