Parton distributions for the LHC run II

2014/10/31 by The NNPDF Collaboration, Richard D. Ball, Valerio Bertone +10 · 24 citations
Computer Science · Physics and Astronomy · #Distributed and Parallel Computing Systems #Electroweak interaction #HERA #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Perturbative QCD #Physics #Physics beyond the Standard Model #Quantum chromodynamics #Rapidity #hep-ex #hep-ph

paper · pdf · doi:10.1007/jhep04(2015)040

151 pages, 69 figures. More typos corrected: published version

openalex publication_date 2015/04/01 · arxiv created 2015/05/04 · arxiv updated 2015/09/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II deep-inelastic inclusive cross-sections, the combined HERA charm data, jet production from ATLAS and CMS, vector boson rapidity and transverse momentum distributions from ATLAS, CMS and LHCb, W +c data from CMS and top quark pair production total cross sections from ATLAS and CMS. Results are based on LO, NLO and NNLO QCD theory and also include electroweak corrections. To validate our methodology, we show that PDFs determined from pseudo-data generated from a known underlying law correctly reproduce the statistical distributions expected on the basis of the assumed experimental uncertainties. This closure test ensures that our methodological uncertainties are negligible in comparison to the generic theoretical and experimental uncertainties of PDF determination. This enables us to determine with confidence PDFs at different perturbative orders and using a variety of experimental datasets ranging from HERA-only up to a global set including the latest LHC results, all using precisely the same validated methodology. We explore some of the phenomenological implications of our results for the upcoming 13 TeV Run of the LHC, in particular for Higgs production cross-sections.

Citations

• Absolute Drell-Yan Dimuon Cross Sections in 800 GeV/c pp and pd Collisions
• Supersymmetry production cross sections in pp collisions at sqrts = 7 TeV
• MRST partons and uncertainties
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• The anti-ktjet clustering algorithm
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• LHAPDF: PDF Use from the Tevatron to the LHC
• Measurement of charged current deep inelastic scattering cross sections with a longitudinally polarised electron beam at HERA
• Measurement of the Inclusive Jet Cross Section in pp Collisions at √s = 1.96 TeV
• Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report
• Update on Neural Network Parton Distributions: NNPDF1.1
• Parton distributions: determining probabilities in a space of functions

Cited by

• Cross section measurement of t-channel single top quark production in pp collisions at s=13<mml:mspace width="0.2em"/>TeV
• Virtues and Vices of Equivariant Transformers
• Measurement of \mathrm t\mathrm t t t ¯ production with additional jet activity, including \mathrm b b quark jets, in the dilepton decay channel using pp collisions at √(s) = 8 \text TeV s = 8 TeV
• Measurements of top-quark pair differential cross-sections in the lepton+jets channel in pp collisions at √(s)=13 TeV using the ATLAS detector
• Parton distribution functions with QED corrections in the valon model
• Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair
• Isospin asymmetry of quark distributions and implications for single top-quark production at the LHC
• Search for supersymmetry with a compressed mass spectrum in the vector boson fusion topology with 1-lepton and 0-lepton final states in proton-proton collisions at √(s) = 13 TeV
• Search for low-mass resonances decaying to ττ and measurement of the Υ → ττ decay in proton-proton collisions at √(s) = 13.6 TeV
• Search for the single production of vector-like quarks decaying into a W boson and a b quark using single-lepton final states in proton-proton collisions at √(s) = 13 TeV
• Measurement of dijet angular distributions and search for beyond the standard model physics in proton-proton collisions at √(s) = 13 TeV
• Measurement of the differential cross section and charge asymmetry for inclusive \mathrm p\mathrm p→ \mathrm W^± +X p p → W ± + X production at √(s) = 8 s = 8 TeV
• Results on TOP physics from CMS
• Search for pair production of excited top quarks in the lepton + jets final state
• Search for heavy resonances decaying into WW in the eν μ ν e ν μ ν final state in pp collisions at √(s)=13 s = 13 \text TeV TeV with the ATLAS detector
• Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at s = 13 √(s)=13 TeV
• NNLO QCD corrections tot-channel single top quark production and decay
• fastNLO tables for NNLO top-quark pair differential distributions
• Measurement of the Higgs boson decay to a low-mass dilepton system and a photon in pp collisions at √(s) = 13 and 13.6 TeV with the ATLAS detector
• Monte Carlo modeling in single top quark and in other rare top-related processes at ATLAS and CMS
• High Order QCD Predictions for Inclusive Production ofWBosons inppCollisions ats=13 TeV
• Constraints on top quark flavor changing neutral currents using diphoton events at the LHC
• Measurement of jet charge in dijet events froms=8 TeVppcollisions with the ATLAS detector
• Precise predictions for the angular coefficients in Z-boson production at the LHC
• Search for Physics Beyond the Standard Model in Events with High-Momentum Higgs Bosons and Missing Transverse Momentum in Proton-Proton Collisions at 13 TeV

Related

• Parton distributions with LHC data
• Parton distributions confront LHC Run II data: a quantitative appraisal
• Parton Distributions: Summary Report
• Proton structure at the LHC
• Parton distributions: HERA-Tevatron-LHC