Parton Distributions for the LHC
R.S. Thorne, A.D. Martin, W.J. Stirling, G. Watt
TL;DR
This paper introduces an updated set of NLO parton distributions for the LHC, incorporating new data sources to improve flavor separation and quantify uncertainties, especially for strange quarks.
Contribution
It provides the first quantitative extraction of strange quark distributions with uncertainties, integrating diverse experimental data for improved accuracy.
Findings
Strange quark distributions and uncertainties are now quantitatively determined.
Jet data from HERA and Tevatron enhance gluon distribution accuracy.
Lepton asymmetry and neutrino data improve flavor separation, especially for down quarks.
Abstract
We present a preliminary set of updated NLO parton distributions. For the first time we have a quantitative extraction of the strange quark and antiquark distributions and their uncertainties determined from CCFR and NuTeV dimuon cross sections. Additional jet data from HERA and the Tevatron improve our gluon extraction. Lepton asymmetry data and neutrino structure functions improve the flavour separation, particularly constraining the down quark valence distribution.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Particle Accelerators and Free-Electron Lasers