Research Publication

T-even TMDs for the spin-0 pseudo-scalar mesons upto twist-4 using light-front formalism

Journal of High Energy Physics article on TMDs for spin-0 pseudo-scalar mesons.

Authors

S. Puhan, S. Sharma, N. Kaur, N. Kumar and H. Dahiya

Journal

JHEP 075 (2024)

Date

February 15, 2024

Abstract

We have investigated the pseudo-scalar meson structure in the form of transverse momentum-dependent parton distribution functions (TMDs) in the light-front based holographic model and quark model. Starting from leading order, we have calculated all the time-reversal even TMDs for pion and kaon up to twist-4 in these models. We have shown the 3-dimensional structure as well as the 2-dimensional structure of these particles along with their average quark transverse momenta. The parton distribution functions (PDFs) of pseudo-scalar mesons have been compared with the results of other models. The sum rules, TMD transverse dependence, inverse moments and Gaussian transverse dependence ratio in these models have also been studied. Further, the transverse quark densities have also been analyzed in the momentum space plane for these particles. The higher twist kaon properties in light-front dynamics have been predicted for the first time in this work.

Summary

First comprehensive calculation of all T-even TMDs for pion and kaon up to twist-4 in light-front holographic and quark models. Predicts higher-twist kaon properties for the first time and verifies sum rules across both frameworks.

Authors: S. Puhan, S. Sharma, N. Kaur, N. Kumar and H. Dahiya
Published in: JHEP 075 (2024)

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