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Determination of $\alpha_s$ and $m_c$ in deep-inelastic scattering

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arxiv 1307.1219 v1 pith:OXIMQCZM submitted 2013-07-04 hep-ph hep-ex

classification hep-phhep-ex
keywords textalphadeep-inelasticdeterminationscatteringanalysischarm-quarkclarifying
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We describe the determination of the strong coupling constant $\alpha_s(M_Z^2)$ and of the charm-quark mass $m_c(m_c)$ in the $\bar{\rm MS}$-scheme, based on the QCD analysis of the unpolarized World deep-inelastic scattering data. At NNLO the values of $\alpha_s(M_Z^2)=0.1134\pm 0.0011(\text{exp})$ and $m_c(m_c)=1.24 \pm 0.03 (\text{exp})\,^{+0.03}_{-0.02} (\text{scale})\,^{+0.00}_{-0.07} (\text{th})$ are obtained and are compared with other determinations, also clarifying discrepancies.

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