Soft-Gluon Resummation and the Valence Parton Distribution Function of the Pion

Abstract

We determine the valence parton distribution function of the pion by performing a new analysis of data for the Drell-Yan process ${\pi }^{-}N\to {\mu }^{+}{\mu }^{-}X$. Compared to previous analyses, we include next-to-leading-logarithmic threshold resummation effects in the calculation of the Drell-Yan cross section. As a result of these, we find a considerably softer valence distribution at high momentum fractions $x$ than obtained in previous next-to-leading order analyses, in line with expectations based on perturbative-QCD counting rules or Dyson-Schwinger equations.

5 pages, 3 figures, accepted for publication in Physical Review Letters

References in corpus (5)

• Dynamical Threshold Enhancement and Resummation in Drell-Yan Production
• Distribution Functions of the Nucleon and Pion in the Valence Region
• Threshold Resummation for W-Boson Production at RHIC
• Threshold resummation of Drell-Yan rapidity distributions
• Single Transverse-Spin Asymmetries at Large-x

Cited by in corpus (12)

• Basic features of the pion valence-quark distribution function
• Pion and kaon valence-quark parton distribution functions
• Pion TMDs in light-front constituent approach, and Boer-Mulders effect in the pion-induced Drell-Yan process
• Nucleon tensor charges and electric dipole moments
• Nucleon structure in a light-front quark model consistent with quark counting rules and data
• Transition from soft- to hard-Pomeron in the structure functions of hadrons at small-$x$ from holography
• Strange quark asymmetry in the proton in chiral effective theory
• Transverse momentum spectrum of dilepton pair in the unpolarized ${\pi }^{-}N$ Drell-Yan process within TMD factorization
• Meson cloud effects on the pion quark distribution function in the chiral constituent quark model
• Towards a Pion Generalized Parton Distribution Model from Dyson-Schwinger Equations
• Threshold-Resummed Cross Section for the Drell-Yan Process in Pion-Nucleon Collisions at COMPASS
• Deep inelastic scattering off scalar mesons in the 1/N expansion from the D3D7-brane system