Measures of pion and kaon structure from generalised parton distributions

Abstract

Pion and kaon structural properties provide insights into the emergence of mass within the Standard Model and attendant modulations by the Higgs boson. Novel expressions of these effects, in impact parameter space and in mass and pressure profiles, are exposed via $\pi$ and $K$ generalised parton distributions, built using the overlap representation from light-front wave functions constrained by one-dimensional valence distribution functions that describe available data. Notably, e.g. $K$ pressure profiles are spatially more compact than $\pi$ profiles and both achieve near-core pressures of similar magnitude to that found in neutron stars.

9 pages, 6 figures, 2 tables. Accepted for publication in Phys. Lett. B

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• Empirical Determination of the Pion Mass Distribution
• Generalized parton distributions in spin-3/2 particles
• Light-front Wave Functions of Vector Mesons in an Algebraic Model
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• The kaon off-shell generalized parton distributions and transverse momentum dependent parton distributions
• Determination of the pion generalized parton distributions at zero skewness
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