Pions in Proton Structure and Everywhere Else

Abstract

The pion cloud is important in nuclear physics and in a variety of low-energy hadronic phenomena. We argue that it is natural to expect it to also be important in lepton-proton deep inelastic scattering and Drell-Yan studies of proton structure. We compute the necessary consequences of the pion cloud in connection with the recent SeaQuest data. The effects are detailed by using the exact kinematics of the experiment. Good agreement with the measurements is obtained. Thus the universality of pionic effects is understood.

8 pages, 5 figures. Expanded discussion, added references. This version accepted for publication. arXiv admin note: text overlap with arXiv:1712.05814

References in corpus (9)

• QCDNUM: Fast QCD Evolution and Convolution
• Soft-Gluon Resummation and the Valence Parton Distribution Function of the Pion
• The Asymmetry of Antimatter in the Proton
• APFEL Web: a web-based application for the graphical visualization of parton distribution functions
• Flavor Structure of the Nucleon Sea
• Pion momentum distributions in the nucleon in chiral effective theory
• Quantifying the nucleon's pion cloud with transverse charge densities
• The Sea of Quarks and Antiquarks in the Nucleon: a Review
• Bayesian Monte Carlo extraction of sea asymmetry with SeaQuest and STAR data

Cited by in corpus (4)

• Hadronic structure on the light-front V. Diquarks, Nucleons and multiquark Fock components
• Measurement of flavor asymmetry of light-quark sea in the proton with Drell-Yan dimuon production in $p+p$ and $p+d$ collisions at 120 GeV
• Flavor asymmetry from the non-perturbative nucleon sea
• Non-perturbative flavor asymmetry in the nucleon and deuteron: The light-front Hamiltonian effective field theory approach