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.

arXiv comment8 pages, 5 figures. Expanded discussion, added references. This version accepted for publication. arXiv admin note: text overlap with arXiv:1712.05814

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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