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

S. Alekhin; J. Blümlein; S. Moch

doi:10.1142/S0217732313600183

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

High Energy Physics - Phenomenology 2015-06-16 v1 High Energy Physics - Experiment

Authors: S. Alekhin , J. Blümlein , S. Moch

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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.

Keywords

strong coupling constant charm quark mass deep-inelastic scattering QCD analysis NNLO MS-bar scheme parton distribution functions

Cite

@article{arxiv.1307.1219,
  title  = {Determination of $\alpha_s$ and $m_c$ in deep-inelastic scattering},
  author = {S. Alekhin and J. Blümlein and S. Moch},
  journal= {arXiv preprint arXiv:1307.1219},
  year   = {2015}
}

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Contribution to the proceedings of the workshop "Determination of the Fundamental Parameters of QCD", Nanyang Technological University, Singapore, 18-22 March 2013

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

Abstract

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