Work

Sketching pion and proton mass distributions

Year: 2025

Type: article

Abstract: A light-front holographic model is used to illustrate an algebraic scheme for constructing a representation of a hadron's zero-skewness generalised parton distribution (GPD) from its valence-quark distribution function (DF) and electromagnetic form factor, F H , without reference to deeply virtual Compton scattering data. The hadron's mass distribution gravitational form factor, A H , calculated from this GPD is harder than F H ; and, for each hadron, the associated mass-density profile is more compact than the analogous charge profile, with each pion near-core density being larger than that of its proton partner. These features are independent of the scheme employed.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.139280

Authors: Xiaobin Wang, Zanbin Xing, Lei Chang, Minghui Ding, Khépani Raya, Craig D. Roberts

Institutions: Nankai University, Nanjing University, Universidad de Huelva

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Ministerio de Ciencia e Innovación, Junta de Andalucía

Awards: G2088934560, G6277277183, G7705497243, G8920660035