Microscopic in-medium nucleon-nucleon cross sections with improved Pauli blocking effects

TL;DR

This paper introduces an improved method for calculating in-medium nucleon-nucleon cross sections by incorporating a more accurate Pauli blocking mechanism within the Dirac-Brueckner-Hartree-Fock framework, enhancing predictions for nucleus-nucleus reactions.

Contribution

It presents a novel approach that combines microscopic medium effects with an improved Pauli blocking mechanism for better in-medium cross section predictions.

Findings

Cross sections are highly sensitive to Pauli blocking details.

The new method provides more accurate in-medium cross sections for reaction modeling.

Enhanced predictions improve understanding of nucleus-nucleus interactions.

Abstract

We present updated predictions of effective elastic nucleon-nucleon cross sections intended for use in nucleus-nucleus reactions. A novel characteristic of the present approach combines all microscopic medium effects included in the Dirac-Brueckner-Hartree-Fock G-matrix with a Pauli blocking mechanism which is more appropriate for applications in ion-ion reaction models as compared to a previous approach. The effective in-medium cross section is found to be quite sensitive to the description of Pauli blocking in the final configurations.