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Title: PDF4LHC recommendations for LHC Run II

Journal Article · · Journal of Physics. G, Nuclear and Particle Physics
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [14];  [3];  [1]
  1. Univ. College London, London (United Kingdom)
  2. Univ. di Milano and INFN, Milano (Italy); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  3. Univ. of Oxford, Oxford (United Kingdom)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Antwerp Univ., Wilrijk (Belgium)
  5. CEA, DSM/IRFU, Gif-sur-Yvette (France)
  6. Univ. di Milano and INFN, Milano (Italy)
  7. Argonne National Lab. (ANL), Argonne, IL (United States)
  8. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  9. Michigan State Univ., East Lansing, MI (United States)
  10. Univ. di Milano and INFN, Milano (Italy); Univ. di Torino and INFN, Torino (Italy)
  11. Univ. College Dublin Science Centre North, Dublin (Ireland)
  12. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  13. Southern Methodist Univ., Dallas, TX (United States)
  14. Univ. Heidelberg, Heidelberg (Germany)

We provide an updated recommendation for the usage of sets of parton distribution functions (PDFs) and the assessment of PDF and PDF+αs uncertainties suitable for applications at the LHC Run II. We review developments since the previous PDF4LHC recommendation, and discuss and compare the new generation of PDFs, which include substantial information from experimental data from the Run I of the LHC. We then propose a new prescription for the combination of a suitable subset of the available PDF sets, which is presented in terms of a single combined PDF set. Lastly, we finally discuss tools which allow for the delivery of this combined set in terms of optimized sets of Hessian eigenvectors or Monte Carlo replicas, and their usage, and provide some examples of their application to LHC phenomenology.

Research Organization:
Southern Methodist Univ., Dallas, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0013681
OSTI ID:
1257280
Journal Information:
Journal of Physics. G, Nuclear and Particle Physics, Vol. 43, Issue 2; ISSN 0954-3899
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 798 works
Citation information provided by
Web of Science

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PDF profiling using the forward-backward asymmetry in Neutral Current Drell-Yan production journal October 2019
Next-to-leading order QCD corrections for single top-quark production in association with two jets journal January 2020
Threshold resummation of the rapidity distribution for Drell-Yan production at NNLO + NNLL journal September 2018
b -hadron production in the general-mass variable-flavor-number scheme and the LHC data journal December 2018
Probing the Quantum Interference between Singly and Doubly Resonant Top-Quark Production in p p Collisions at s = 13 TeV with the ATLAS Detector journal October 2018
Search for a Light Charged Higgs Boson Decaying to a W Boson and a C P -Odd Higgs Boson in Final States with e μ μ or μ μ μ in Proton-Proton Collisions at s = 13     TeV journal September 2019
Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets journal December 2019
Exploiting the WH/ZH symmetry in the search for new physics journal September 2018
Nuclear parton distributions from lepton-nucleus scattering and the impact of an electron-ion collider: NNPDF Collaboration journal June 2019
Measurement of $$W^{\pm }Z$$ W ± Z production cross sections and gauge boson polarisation in pp collisions at $$\sqrt{s} = 13~\text {TeV}$$ s = 13 TeV with the ATLAS detector journal June 2019
Measurements of top-quark pair differential and double-differential cross-sections in the $$\ell $$ℓ+jets channel with pp collisions at $$\sqrt{s}=13$$s=13 TeV using the ATLAS detector journal December 2019
Constraints on mediator-based dark matter and scalar dark energy models using √s = 13 TeV pp collision data collected by the ATLAS detector text January 2019
Search for large missing transverse momentum in association with one top-quark in proton-proton collisions at √s = 13 TeV with the ATLAS detector text January 2020
FCC Physics Opportunities text January 2019
Pinning down the large-x gluon with NNLO top-quark pair differential distributions text January 2017
Search for pair production of vectorlike quarks in the fully hadronic final state text January 2019
Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton+jets final state in pp collisions at $\sqrt{s} =$ 13 TeV text January 2018
MSSM Higgs Benchmark Scenarios for Run 2 and Beyond: the low $\tan\beta$ region text January 2019
Searches for scalar leptoquarks and differential cross-section measurements in dilepton-dijet events in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment text January 2019
Measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $e\mu$ dilepton events from $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector text January 2019
Performance of electron and photon triggers in ATLAS during LHC Run 2 text January 2020
Search for new particles decaying to a jet and an emerging jet text January 2019
Unpolarized isovector quark distribution function from lattice QCD: A systematic analysis of renormalization and matching text January 2020
Searches for invisible decays of the Higgs boson in pp collisions at √s = 7, 8, and 13 TeV text January 2017
MSSM Higgs boson searches at the LHC: benchmark scenarios for Run 2 and beyond text January 2019
Search for a heavy pseudoscalar boson decaying to a Z and a Higgs boson at $\sqrt{s}=13\,\text {Te}\text {V} $ text January 2019
Search for single production of vector-like quarks decaying into Wb in pp collisions at √s = 13 TeV with the ATLAS detector text January 2019
Search for heavy neutrinos and third-generation leptoquarks in hadronic states of two τ leptons and two jets in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal March 2019
Leptoquark toolbox for precision collider studies journal May 2018
NLO and off-shell effects in top quark mass determinations journal July 2018
Probing nuclear modifications of parton distribution functions through the isolated prompt photon production at energies available at the CERN Large Hadron Collider journal May 2019
Mixed hidden sector-visible sector dark matter and observation of a C P odd Higgs boson at HL-LHC and HE-LHC journal July 2019
Probing the sea quark content of the proton with one-particle-inclusive processes journal November 2017
Search for Leptoquarks Coupled to Third-Generation Quarks in Proton-Proton Collisions at s = 13 TeV journal December 2018
Search for Narrow H γ Resonances in Proton-Proton Collisions at s = 13 TeV journal March 2019
Measurements of top-quark pair differential cross-sections in the $$e\mu $$ e μ channel in pp collisions at $$\sqrt{s} = 13$$ s = 13  TeV using the ATLAS detector journal May 2017
Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton–proton collisions at $$\sqrt{s} = 13$$ s = 13   $$\text {TeV}$$ TeV with the ATLAS detector journal July 2018
Search for new physics in dijet angular distributions using proton–proton collisions at $$\sqrt{s}=13\hbox {TeV}$$ s = 13 TeV and constraints on dark matter and other models journal September 2018
Impact of the top quark cross-section data on parton distribution functions journal August 2018
Parton distributions from high-precision collider data text January 2017
NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation text January 2016
Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft $\tau$ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at $\sqrt{s}=$ TeV text January 2020
Charm Production and QCD Analysis at HERA and LHC text January 2017
Search for physics beyond the standard model in events with overlapping photons and jets text January 2019
Search for pair production of vectorlike quarks in the fully hadronic final state text January 2019
Impact of Isolation and Fiducial Cuts on $q_T$ and N-Jettiness Subtractions text January 2019
Measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $e\mu$ dilepton events from $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector text January 2020
Next-to-leading-order QCD and electroweak corrections to WWW production at proton-proton colliders text January 2017
Full top quark mass dependence in Higgs boson pair production at NLO text January 2016
Higgs boson pair production at NNLO with top quark mass effects text January 2018
Fiducial distributions in Higgs and Drell-Yan production at N3LL+NNLO text January 2018
Threshold resummation for dark-matter production at the LHC text January 2019
Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion text January 2019
Search for the production of four top quarks in the single-lepton and opposite-sign dilepton final states in proton-proton collisions at $ \sqrt{s} $ = 13 TeV text January 2019
Search for heavy resonances decaying to tau lepton pairs in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal February 2017
Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal November 2018
Measurement of colour flow using jet-pull observables in $$t\bar{t}$$ t t ¯ events with the ATLAS experiment at $$\sqrt{s} = 13\,\hbox {TeV}$$ s = 13 TeV journal October 2018
Search for rare decays of $$\mathrm {Z}$$ Z and Higgs bosons to $${\mathrm {J}/\psi } $$ J / ψ and a photon in proton-proton collisions at $$\sqrt{s}$$ s = 13 $$\,\text {TeV}$$ TeV journal January 2019
Parton distributions from high-precision collider data: NNPDF Collaboration text January 2017
Performance of electron and photon triggers in ATLAS during LHC Run 2 text January 2020
Exploiting the WH/ZH symmetry in the search for new physics text January 2018
Hard photons in hadroproduction of top quarks with realistic final states text January 2018
Search for supersymmetry using Higgs boson to diphoton decays at √s = 13 TeV text January 2019
Search for the Decay of the Higgs Boson to Charm Quarks with the ATLAS Experiment text January 2018
Search for new particles decaying to a jet and an emerging jet text January 2019
NNLL-fast: predictions for coloured supersymmetric particle production at the LHC with threshold and Coulomb resummation text January 2016
Off-shell Top Quarks with One Jet at the LHC: A comprehensive analysis at NLO QCD text January 2016
Pinning down the large-x gluon with NNLO top-quark pair differential distributions text January 2016
Phenomenology of on-shell Higgs production in the MSSM with complex parameters text January 2016
Resummation Improved Rapidity Spectrum for Gluon Fusion Higgs Production text January 2017
Nonlinear effects in gluon distribution predicted by GLR-MQ evolution equation at next-to-leading order in LHC data text January 2017
NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers text January 2017
Gluon quasidistribution function at one loop text January 2017
First global next-to-leading order determination of diffractive parton distribution functions and their uncertainties within the {\tt xFitter} framework text January 2018
Nuclear parton density functions from dijet photoproduction at the EIC text January 2018
Unpolarized isovector quark distribution function from Lattice QCD: A systematic analysis of renormalization and matching text January 2018
MSSM Higgs Boson Searches at the LHC: Benchmark Scenarios for Run 2 and Beyond text January 2018
A guide to light-cone PDFs from Lattice QCD: an overview of approaches, techniques and results text January 2018
Interference Effects in $t{\bar t}$ Production at the LHC as a Window on New Physics text January 2019
The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale text January 2019
Searches for scalar leptoquarks and differential cross-section measurements in dilepton-dijet events in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment text January 2019
Anapole Dark Matter via Vector Boson Fusion Processes at the LHC text January 2019
Monte Carlo sampling variant of the DSSV14 set of helicity parton densities text January 2019
Can New Physics hide inside the proton? text January 2019
Next-to-leading order QCD corrections for single top-quark production in association with two jets text January 2019
Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections text January 2019
Search for physics beyond the standard model in events with overlapping photons and jets text January 2019
Search for a heavy resonance decaying into a Z boson and a vector boson in the $ \nu \overline{\nu}\mathrm{q}\overline{\mathrm{q}} $ final state text January 2018
Measurement of the $\mathrm {Z}/\gamma ^{*} \rightarrow \tau \tau $ cross section in pp collisions at $\sqrt{s} = 13 \hbox { TeV}$=13TeV and validation of $\tau $ lepton analysis techniques text January 2018
Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at s = 13 TeV journal October 2020

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