Abstract
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) + 0.019− 0.000 (param) + 0.011− 0.008 (mod) + 0.003− 0.008 (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) + 0.011− 0.010 (param) + 0.015− 0.004 (mod) + 0.045− 0.004 (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.
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The xFitter developers’ team., Bertone, V., Camarda, S. et al. A determination of m c (m c ) from HERA data using a matched heavy-flavor scheme. J. High Energ. Phys. 2016, 50 (2016). https://doi.org/10.1007/JHEP08(2016)050
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DOI: https://doi.org/10.1007/JHEP08(2016)050