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Three-loop running of the strong coupling constant and the mass of the b-quark in the supersymmetric QCD

  • Session “Quantum Field Theory and Theory of Elementary Particles”
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Abstract

Supersymmetric extension of the QCD (SQCD) is considered and the scale dependence of some important parameters, i.e. strong coupling α s and b-quark running mass m b , is studied with the help of threeloop renormalization group equations. Five-flavour QCD is considered as a low-energy effective theory of SQCD and two-loop decoupling (threshold) effects are taken into account. Variations in running α s and m b at the GUT scale μGUT = 1016 GeV due to uncertainties in the initial experimental data and the ambiguities in the decoupling scale are analyzed for a particular point of the parameter space. Comparison with known results is given.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, 141980, Russia

    A. V. Bednyakov

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  1. A. V. Bednyakov
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Talk at the International Bogolyubov Conference “Problems of Theoretical and Mathematical Physics”, JINR, Dubna, August 21–27, 2009.

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Bednyakov, A.V. Three-loop running of the strong coupling constant and the mass of the b-quark in the supersymmetric QCD. Phys. Part. Nuclei 41, 910–912 (2010). https://doi.org/10.1134/S1063779610060171

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  • DOI: https://doi.org/10.1134/S1063779610060171

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