Empirical Determination of the Pion Mass Distribution

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Publication date

2023

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Ciencias Integradas

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Center

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https://hdl.handle.net/10272/22332

DOI

10.48550/arXiv.2302.07361

Abstract

Existing pion+nucleus Drell-Yan and electron+pion scattering data are used to develop ensembles of model-independent representations of the pion generalised parton distribution (GPD). Therewith, one arrives at a data-driven prediction for the pion mass distribution form factor, θ2. Compared with the pion elastic electromagnetic form factor, θ2 is harder: the ratio of the radii derived from these two form factors is rθ2π/rπ=0.79(3). Our data-driven predictions for the pion GPD, related form factors and distributions should serve as valuable constraints on theories of pion structure.

Keywords

High Energy Physics; Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Lattice (hep-lat); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)

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22 Física

Bibliographic citation

Xu, Y.-Z., Raya, K., Cui, Z.-F., Roberts, C. D., & Rodríguez-Quintero, J. (2023). Empirical Determination of the Pion Mass Distribution. arXiv. https://doi.org/10.48550/ARXIV.2302.07361. Publicado en: Chinese Physics Letters (Vol. 40, Issue 4, p. 041201). IOP Publishing. https://doi.org/10.1088/0256-307x/40/4/041201

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