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Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.054016
Abstract: We consider the Lagrange density of non-relativistic Quantum Chromodynamics expanded up to order $1/m^2$, where $m$ is the heavy quark mass, and compute several matching coefficients up to two-loop order. Our results are building blocks…
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Keywords:
coefficients nonrelativistic;
qcd two;
matching coefficients;
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