Two-loop anomalous dimensions for currents of baryons with two heavy quarks in NRQCD

1998/10/08 by V. V. Kiselev, Kiselev, V. V., A. I. Onishchenko +1
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9810283

Latex file, 13 page, 1 postscript figure

arxiv created 1998/10/08 · openalex publication_date 1998/10/08 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present analytical results on the two-loop anomalous dimensions of currents for baryons, containing two heavy quarks J = [Q^iTCΓτQ^j]Γ' q^kε_ijk with arbitrary Dirac matrices Γ and Γ' in the framework of NRQCD in the leading order over both the relative velocity of heavy quarks and the inverse heavy quark mass. It is shown, that in this approximation the anomalous dimensions do not depend on the Dirac structure of the current under consideration.

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