Power corrections from decoupling of the charm quark
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Peer-reviewed
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Abstract
Decoupling of heavy quarks at low energies can be described by means of an
effective theory as shown by S. Weinberg in Ref. [1]. We study the decoupling
of the charm quark by lattice simulations. We simulate a model, QCD with two
degenerate charm quarks. In this case the leading order term in the effective
theory is a pure gauge theory. The higher order terms are proportional to
inverse powers of the charm quark mass
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1873-2445