Parton Distributions for Event Generators

Abstract

In this paper, conventional Global QCD analysis is generalized to produce parton distributions optimized for use with event generators at the LHC. This optimization is accomplished by combining the constraints due to existing hard-scattering experimental data with those from anticipated cross sections for key representative SM processes at LHC (by the best available theory) as joint input to the global analyses. The PDFs obtained in these new type of global analyses using matrix elements calculated in any given order will be best suited to work with event generators of that order, for predictions at the LHC. This is most useful for LO event generators at present. Results obtained from a few candidate PDF sets (labeled as CT09MCS, CT09MC1 and CT09MC2) for LO event generators produced in this way are compared with those from other approaches.

35 pages, 19 figures, and 4 tables

References in corpus (12)

• PYTHIA 6.4 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Implications of CTEQ global analysis for collider observables
• MadGraph/MadEvent v4: The New Web Generation
• Parton Distributions for LO Generators
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• Next-to-Leading order Higgs + 2 jet production via gluon fusion
• Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC
• NLO QCD corrections to WW+jet production at hadron colliders
• Next-to-leading order predictions for WW + 1 jet distributions at the LHC
• Choosing the Factorization Scale in Perturbative QCD

Cited by in corpus (34)

• General-purpose event generators for LHC physics
• Interleaved Parton Showers and Tuning Prospects
• Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Progress in the Determination of the Partonic Structure of the Proton
• Z' physics with early LHC data
• Z'_{B-L} discovery potential at the LHC for \sqrt{s}=7 TeV
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Measurement of the W boson mass
• Constraining BSM Physics at the LHC: Four top final states with NLO accuracy in perturbative QCD
• Scattering amplitudes: the most perfect microscopic structures in the universe
• First measurement of charm production in fixed-target configuration at the LHC
• A new observable to measure the top-quark mass at hadron colliders
• Correlations in double parton distributions: effects of evolution
• Parton distribution function dependence of benchmark Standard Model total cross sections at the 7 TeV LHC
• Constraining Flavor Changing Interactions from LHC Run-2 Dilepton Bounds with Vector Mediators
• Structure Functions
• Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb${}^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles
• Constrained fit of the valence transversity distributions from dihadron production
• Search for new phenomena in the WW to l nu l' nu' final state in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• On the ratio of ttbb and ttjj cross sections at the CERN Large Hadron Collider
• Precision measurement of forward $Z$ boson production in proton-proton collisions at $\sqrt{s}=13$ TeV
• Open charm production and asymmetry in $p$Ne collisions at $\sqrt{s_{\mathrm{NN}}}=$ 68.5 GeV
• Search for resonant WZ production in the WZ to l nu l' l' channel in sqrt(s) = 7 TeV pp collisions with the ATLAS detector
• Quantifying quark mass effects at the LHC: A study of pp -> b anti-b b anti-b + X at next-to-leading order
• Parton distribution functions in the context of parton showers
• A CT18 global PDF fit at the leading order in QCD
• Measurement of $D_s^{\pm }$ production asymmetry in $pp$ collisions at $\sqrt{s}=7$ and 8 TeV
• Distinguishing Flavor Non-universal Colorons from Z' Bosons at the LHC
• GR@PPA 2.8: initial-state jet matching for weak boson production processes at hadron collisions
• Charmonium production in $p$Ne collisions at $\sqrt{s_{\mathrm{NN}}}=68.5$ GeV
• Probing the diffractive production of gauge bosons at forward rapidities
• Sensitivities to PDFs in parton shower MC generator reweighting and tuning
• Simulation of $Z$-boson $p_T$ spectrum at LHC and Tevatron using GR@PPA