Effect of in-medium π and η propagators to charge symmetry breaking interaction

2019/05/16 by S. Biswas, Biswas, Subhrajyoti
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1905.06898

openalex publication_date 2019/05/16 · openalex created_date 2022/07/29 · openalex updated_date 2026/07/28

Abstract

We revisit the charge symmetry breaking (CSB) in nucleon-nucleon (NN) interaction caused by π-η mixing in nuclear matter (NM) employing one boson exchange (OBE) model. The medium effect on CSB is incorporated through the in-medium π and η propagators. In addition, the medium modification to the nucleon mass is also taken into account to construct the CSB class III potential considering off-shell π-η mixing amplitude and large contribution of in-medium meson propagators to CSB potential is found for the pseudoscalar (PS) interaction compared to that of pseudovector (PV) interaction.

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