Effect of an asymmetric nuclear medium on the valence quark structure of the kaons

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-03-03 DOI:10.1103/physrevd.111.054001

Dhananjay Singh, Satyajit Puhan, Navpreet Kaur, Manpreet Kaur, Arvind Kumar, Suneel Dutt, Harleen Dahiya

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Abstract

The role of asymmetric nuclear medium on the properties of kaon is investigated at zero and finite temperature employing a hybrid approach integrating the light cone quark model and the chiral SU(3) quark mean field model. The in-medium quark masses are calculated within the chiral SU(3) quark mean field model and are used as inputs to study the medium modifications in the kaon properties. In particular, we have analyzed the impact of baryonic density, isospin asymmetry, and temperature on the weak decay constant, distribution amplitudes, and parton distribution functions (PDFs) of valence quarks of kaon. The effects of isospin asymmetry on the kaon doublet K=(K+K0) and antikaon doublet K¯=(K−,K¯0) are also studied. In order to compare with future experiments, we have also evolved the in-medium PDFs of kaons to Q2=16 GeV2. As compared to the temperature and isospin asymmetry, change in baryonic density of the nuclear medium makes more significant changes to the distribution amplitudes and PDFs of kaons.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.