# Using Forward-Backward Drell-Yan Asymmetry in PDF Determinations

## TL;DR

This paper investigates how incorporating Forward-Backward Asymmetry data from LHC Drell-Yan processes improves the determination of parton distribution functions, enhancing sensitivity at various luminosity stages.

## Contribution

It introduces a novel analysis of $A_{FB}$ data's impact on PDF uncertainties using xFitter, highlighting its potential for improved PDF constraints.

## Key findings

- $A_{FB}$ data reduces PDF uncertainties.
- Enhanced sensitivity at current LHC luminosity.
- Potential for further improvements at future luminosity.

## Abstract

We study the impact of the inclusion of Neutral Current (NC) DY data from LHC mapped in the Forward-Backward Asymmetry ($A_{\rm FB}$) observable on PDF uncertainties, using the open source platform \texttt{xFitter}. We find that $A_{\rm FB}$ enables new PDF sensitivity at current and future luminosity stages of LHC.