# Impacts of nuclear-physics uncertainty in stellar temperatures on the s-process nucleosynthesis

## TL;DR

This study assesses how nuclear physics uncertainties, especially in reaction rates and beta-decays, influence s-process nucleosynthesis in stars, highlighting the importance of temperature-dependent uncertainties in modeling stellar element production.

## Contribution

It introduces a Monte Carlo method with temperature-dependent uncertainties to evaluate their impact on s-process nucleosynthesis in different stellar environments.

## Key findings

- Uncertainty in (n,γ) reaction rates significantly affects element production along the β-stability line.
- Beta-decay uncertainties, especially from excited states, strongly influence branching points.
- Temperature-dependent uncertainties are crucial for accurate modeling of stellar nucleosynthesis.

## Abstract

We evaluated the uncertainty relevant to s-process nucleosynthesis using a Monte-Carlo centred approach. We are based on a realistic and general prescription of temperature dependent uncertainty for the reactions. We considered massive stars for the weak s-process and AGB stars for the main s-process. We found that the adopted uncertainty for (n,$\gamma$) rates, tens of per cent on average, affect the production of s-process nuclei along the $\beta$-stability line, while for $\beta$-decay, for which contributions from excited states enhances the uncertainty, has the strongest impact on branching points.