# Pion-induced Drell-Yan processes within TMD factorization

## TL;DR

This paper extracts the pion's TMD parton distribution using NNLO analysis of Drell-Yan data within TMD factorization, highlighting normalization discrepancies with experimental measurements.

## Contribution

It provides a next-to-next-to-leading order extraction of the pion TMD distribution within the TMD factorization framework, incorporating previous global fit results.

## Key findings

- Significant normalization difference observed in E615 data
- Successful NNLO extraction of pion TMD distribution
- Insights into non-perturbative TMD evolution

## Abstract

We extract the pion transverse momentum dependent (TMD) parton distribution by fitting the pion-induced Drell-Yan process within the framework of TMD factorization. The analysis is done at the next-to-next-to-leading order (NNLO) with proton TMD distribution and non-perturbative TMD evolution extracted earlier in the global fit. We observe the significant difference in the normalization of transverse momentum differential cross-section measured by E615 experiment and the theory prediction.