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arXiv · hep-ph/9604349

Two-loop Anomalous Dimensions of Heavy Baryon Currents in Heavy Quark Effective Theory

S. Groote·J. G. Körner·O. I. Yakovlev
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Abstract

We present results on the two-loop anomalous dimensions of the heavy baryon HQET currents $J=(q^TCΓτq)Γ'Q$ with arbitrary Dirac matrices $Γ$ and $Γ'$. From our general result we obtain the two-loop anomalous dimensions for currents with quantum numbers of the ground state heavy baryons $Λ_Q$, $Σ_Q$ and $Σ_Q^*$. As a by-product of our calculation and as an additional check we rederive the known two-loop anomalous dimensions of mesonic scalar, pseudoscalar, vector, axial vector and tensor currents $(J=\bar qΓq)$ in massless QCD as well as in HQET.

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S. Groote, J. G. Körner, O. I. Yakovlev. 1996-04-17. Two-loop Anomalous Dimensions of Heavy Baryon Currents in Heavy Quark Effective Theory. https://doi.org/10.1103/physrevd.54.3447

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