# PROSA PDFs and astrophysical applications

## TL;DR

This paper discusses the PROSA PDFs, which incorporate LHCb data on heavy flavor production to improve understanding of gluons and sea quarks at very low x, and their relevance for neutrino astronomy.

## Contribution

It introduces the PROSA PDFs, the first to include open charm and bottom production data at LHCb, enhancing low-x parton distribution knowledge for astrophysical applications.

## Key findings

- PROSA PDFs reduce uncertainties in gluon and sea quark distributions at low x.
- Application of PROSA PDFs improves calculations of prompt neutrino fluxes.
- The PDFs are relevant for neutrino astronomy and astrophysical modeling.

## Abstract

The PROSA parton distribution function fit was the first one appeared in the literature incorporating data on open charm and open bottom production at LHCb, in order to reduce the uncertainties on gluons and sea quarks at low $x$'s ($x$ $<$ $10^{-4}$). We discuss aspects of the PROSA PDFs of particular relevance for their usage in the field of Neutrino Astronomy, and their application in the computation of prompt neutrino fluxes.