Perturbative matching of heavy-light currents at one-loop
Aida X. El-Khadra, Elvira G\'amiz, Andreas S. Kronfeld, and Matthew A., Nobes
TL;DR
This paper performs a one-loop perturbative matching calculation for heavy-light and heavy-heavy currents using improved actions for quarks and gluons, aiding precise lattice QCD computations.
Contribution
It provides the first detailed one-loop matching results for heavy-light and heavy-heavy currents with specific improved lattice actions.
Findings
One-loop matching factors for heavy-light currents calculated.
Results applicable to Fermilab heavy quarks and improved gluon actions.
Enhances accuracy of lattice QCD simulations involving heavy quarks.
Abstract
We present results of a perturbative matching calculation performed at one-loop for heavy-light currents. We use the Fermilab action for the heavy quarks, the Asqtad action for the light quarks, and an improved gluon action. We also present results for heavy-heavy currents with Fermilab heavy quarks and improved glue.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions