Charm-quark pole mass from HERA Combined and LHCb charm production data

TL;DR

This paper determines the charm-quark pole mass using advanced pQCD analysis of recent HERA and LHCb data, and examines its impact on proton PDFs at NNLO accuracy.

Contribution

It provides a new extraction of the charm-quark pole mass and assesses its influence on proton PDFs within NNLO pQCD framework.

Findings

Precise value of charm-quark pole mass obtained.

First analysis of charm-quark mass impact on proton PDFs.

Enhanced understanding of charm mass effects at NNLO.

Abstract

One of the most popular definition for the charm-quark mass is the charm-quark pole mass $m_c^{\rm pole}$. In this contribution, we extract the charm-quark pole mass through perturbative Quantum Chromo Dynamics (pQCD) analysis up to the next-to-next-to-leading order (NNLO) corrections from HERA Combined and LHCb charm production recent data sets. Then, we investigate for the first time the charm-quark pole mass $m_c^{\rm pole}$ pure impact, as an extra pQCD parameter on the proton Parton Distribution Functions (PDFs) at the NNLO corrections.