# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Determination of Charm Mass Running from an Analysis of Combined HERA Charm Data

Jul 24, 2015, 10:30 AM
15m
HS32

### Speaker

Achim Geiser (Deutsches Elektronen-Synchrotron Hamburg and Zeuthen (DE))

### Description

The combined HERA data on charm production in deep inelastic scattering have recently 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 Q² to evaluate the charm quark running mass at different scales to one-loop order. The scale dependence of the mass is found to be consistent with QCD expectations, and a graphical representation of the charm mass running, similar to the representation of the beauty mass running from LEP data, is obtained from data for the first time.