Determination of αs and mc in Deep-Inelastic Scattering
Abstract
We describe the determination of the strong coupling constant α s(M_Z2) and of the charm-quark mass mc(mc) in the /lineMS-scheme, based on the QCD analysis of the unpolarized World deep-inelastic scattering data. At NNLO the values of α s(M_Z2) = 0.1134± 0.0011({exp}) and mc(m_c) = 1.24±0.03({exp})+0.03-0.02 ({scale})+0.00-0.07({th}) are obtained and are compared with other determinations, and also clarifying discrepancies.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- August 2013
- DOI:
- 10.1142/S0217732313600183
- arXiv:
- arXiv:1307.1219
- Bibcode:
- 2013MPLA...2860018A
- Keywords:
-
- Strong coupling constant;
- charm quark mass;
- parton distributions;
- 12.38.Qk;
- 12.38.Bx;
- Experimental tests;
- Perturbative calculations;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- Contribution to the proceedings of the workshop "Determination of the Fundamental Parameters of QCD", Nanyang Technological University, Singapore, 18-22 March 2013