Higgs modulation of emergent mass as revealed in kaon and pion parton distributions

TL;DR

This paper provides the first parameter-free predictions of kaon and pion parton distribution functions, revealing how Higgs-modulated emergent mass influences their internal structure, which is crucial for understanding fundamental particle properties.

Contribution

It introduces the first parameter-free theoretical predictions for kaon distribution functions and compares them with pion distributions, highlighting Higgs effects on emergent mass in these particles.

Findings

Predicted all kaon distribution functions without free parameters.

Compared kaon and pion distributions to reveal Higgs influence.

Results encourage new experiments on meson internal structure.

Abstract

Strangeness was discovered roughly seventy years ago, lodged in a particle now known as the kaon, $K$. Kindred to the pion, $\pi$; both states are massless in the absence of Higgs-boson couplings. Kaons and pions are Nature's most fundamental Nambu-Goldstone modes. Their properties are largely determined by the mechanisms responsible for emergent mass in the standard model, but modulations applied by the Higgs are crucial to Universe evolution. Despite their importance, little is known empirically about $K$ and $\pi$ structure. This study delivers the first parameter-free predictions for all $K$ distribution functions (DFs) and comparisons with the analogous $\pi$ distributions, i.e. the one-dimensional maps that reveal how the light-front momentum of these states is shared amongst the gluons and quarks from which they are formed. The results should stimulate improved analyses of existing data and motivate new experiments sensitive to all $K$ and $\pi$ DFs.