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Charm quark mass dependence in the CTEQ NNLO global QCD analysis

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(Jun 22, 2013)

Abstract

We discuss the impact of the charm quark mass in the CTEQ NNLO global analysis of parton distribution functions of the proton. The \$MS\$ mass \$m\_c(m\_c)\$ of the charm quark is extracted in the S-ACOT-\$\chi\$ heavy-quark factorization scheme at \$O(\alpha\_s^2)\$ accuracy and found to be in agreement with the world-average value. Impact on \$m\_c(m\_c)\$ of combined HERA-1 data on semiinclusive charm production at HERA collider and contributing systematic uncertainties are reviewed.

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