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arXiv · 2201.00884

Emergence of pion parton distributions

Z. -F. Cui·M. Ding·J. M. Morgado·K. Raya·D. Binosi·L. Chang·F. De Soto·C. D. Roberts·J. Rodríguez-Quintero·S. M. Schmidt
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Abstract

Supposing only that there is an effective charge which defines an evolution scheme for parton distribution functions (DFs) that is all-orders exact, strict lower and upper bounds on all Mellin moments of the valence-quark DFs of pion-like systems are derived. Exploiting contemporary results from numerical simulations of lattice-regularised quantum chromodynamics (QCD) that are consistent with these bounds, parameter-free predictions for pion valence, glue, and sea DFs are obtained. The form of the valence-quark DF at large values of the light-front momentum fraction is consistent with predictions derived using the QCD-prescribed behaviour of the pion wave function.

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Z. -F. Cui, M. Ding, J. M. Morgado, K. Raya, D. Binosi, L. Chang, F. De Soto, C. D. Roberts, J. Rodríguez-Quintero, S. M. Schmidt. 2022-01-03. Emergence of pion parton distributions. https://doi.org/10.1103/physrevd.105.l091502

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