Four-loop QCD β-function with different fermion representations of the gauge group
classification
✦ hep-ph
keywords
betafunctioncouplingdifferentfour-loopgaugegrouprepresentations
read the original abstract
We present analytical results at four-loop level for the $\beta$-function of the coupling of a generic gauge group and any number of different quark representations. From this we can directly derive the gluino contribution to the strong coupling $\beta$-function of supersymmetric extensions of the Standard Model.
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