Parton distribution functions from scalar light-front parton gas model

Shaoyang Jia and James P. Vary

Physica A: Statistical Mechanics and its Applications, 2025, vol. 674, issue C

Abstract: We propose an application of a microcanonical ensemble with light-front kinematics to model the phase-space distribution of relativistic constituents of a bound state. These constituents denoted by partons are treated as classical spin-zero particles confined inside the bound state with inter-parton collisions as their only interaction. The microcanonical molecular dynamics ensemble is applied to obtain the phase-space distribution of such a thermodynamic system. We sample this phase-space distribution using Monte Carlo algorithms to obtain the parton distribution functions (PDFs) in scenarios with 3, 4, and 5 identical partons. In addition PDFs when a selected number of massless partons are mixed with 3 massive partons are also presented.

Keywords: Microcanonical ensemble; Phase-space distribution; Relativistic bound state (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:674:y:2025:i:c:s0378437125004200

DOI: 10.1016/j.physa.2025.130768

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