# 25th International Workshop on Deep Inelastic Scattering and Related Topics

Apr 3 – 7, 2017
University of Birmingham
Europe/London timezone

## Running of the Charm-Quark Mass from HERA Deeply Inelastic Scattering Data

Apr 5, 2017, 9:00 AM
18m
Small Lecture Theatre, Poynting Building

#### Small Lecture Theatre, Poynting Building

WG5) Physics with Heavy Flavours

### Speaker

Achim Geiser (Deutsches Elektronen-Synchrotron (DE))

### Description

Combined HERA data on charm production in deeply inelastic scattering have earlier been used to determine the charm-quark running mass $m_c(m_c)$ in the $\overline{MS}$ renormalisation scheme. The same data are used differentially as a function of the photon virtuality $Q^2$ to evaluate the charm-quark running mass at different scales to one-loop order, in the context of a next-to-leading order QCD analysis. The scale dependence of the mass is found to be consistent with QCD expectations and a graphical representation of the charm-quark mass running is obtained from data for the first time.

### Primary authors

Andrii Gizhko (DESY) S. Moch (UHH) Achim Geiser (Deutsches Elektronen-Synchrotron (DE))