# New parameterization of the effective field theory motivated relativistic mean field model

## TL;DR

This paper introduces a new parameter set for the ERMF model that accurately describes nuclear systems and neutron star properties, aligning well with experimental data.

## Contribution

The study presents a novel parameterization of the ERMF model incorporating additional meson couplings, improving predictions of nuclear and neutron star characteristics.

## Key findings

- Maximum neutron star mass of 2.03 solar masses
- Predicted neutron star radius of 12.69 km at canonical mass
- Model results agree with experimental data

## Abstract

A new parameter set is generated for finite and infinite nuclear system within the effective field theory motivated relativistic mean field (ERMF) formalism. The isovector part of the ERMF model employed in the present study includes the coupling of nucleons to the {\delta} and \r{ho} mesons and the cross-coupling of \r{ho} mesons to the {\sigma} and {\omega} mesons. The results for the finite and infinite nuclear systems obtained using our parameter set are in harmony with the available experimental data. We find the maximum mass of the neutron star to be 2.03M\odot? and yet a relatively smaller radius at the canonical mass, 12.69 km, as required by the available data.