A determination of m c ( m c ) from HERA data using a matched heavy-flavor scheme

The charm quark mass is one of the fundamental parameters of the standard model lagrangian. in this work we present a determination of the $$ overline{mathrm{ms}} $$ charm mass from a fit to the inclusive and charm hera deep-inelastic structure function data. the analysis is performed within the xfitter framework, with structure functions computed in the fonll general-mass scheme as implemented in apfel. in the case of the fonll-c scheme, we obtain m c (m c ) = 1.335 ± 0.043(exp) − 0.000 + 0.019 (param) − 0.008 + 0.011 (mod) − 0.008 + 0.003 (th) gev. we also perform an analogous determination in the fixed-flavor-number scheme at next-to-leading order, finding m c (m c ) = 1.318 ± 0.054(exp) − 0.010 + 0.011 (param) − 0.004 + 0.015 (mod) − 0.004 + 0.045 (th) gev, compatible with the fonll-c value. our results are consistent with previous determinations from dis data as well as with the pdg world average.