New parton distributions for collider physics
Hung-Liang Lai, Marco Guzzi, Joey Huston, Zhao Li, Pavel M. Nadolsky,, Jon Pumplin, and C.-P. Yuan
TL;DR
This paper presents new proton parton distribution functions derived from a comprehensive global analysis of recent collider data, incorporating theoretical advancements and providing two PDF sets to accommodate different data fits.
Contribution
It introduces updated PDFs for collider physics, including two variants, based on the latest data and theoretical developments in perturbative QCD.
Findings
Two PDF sets, CT10 and CT10W, accommodate different data fits.
Predictions for collider processes show reduced uncertainties.
Enhanced understanding of proton structure at high energies.
Abstract
We extract new parton distribution functions (PDFs) of the proton by global analysis of hard scattering data in the general-mass framework of perturbative quantum chromodynamics. Our analysis includes new theoretical developments together with the most recent collider data from deep-inelastic scattering, vector boson production, and single-inclusive jet production. Due to the difficulty in fitting both the DO Run-II W lepton asymmetry data and some fixed-target DIS data, we present two families of PDFs, CT10 and CT10W, without and with these high-luminosity W lepton asymmetry data included in the global analysis. With both sets of PDFs, we study theoretical predictions and uncertainties for a diverse selection of processes at the Fermilab Tevatron and the CERN Large Hadron Collider.
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