Decoupling of charm beyond leading order
Fakultät für Mathematik und Naturwissenschaften, Bergische Universität Wuppertal, Gauβstr. 20, 42119 Wuppertal, Germany
2 Institut für Physik, Humboldt Universität, Newtonstr. 15, 12489 Berlin, Germany
3 DAMTP, Centre for Mathematical Sciences, Wilberforce Road, CB3 0WA Cambridge, UK
* Speaker, e-mail: email@example.com
Published online: 26 March 2018
We study the effective theory of decoupling of a charm quark at low energies. We do this by simulating a model, QCD with two mass-degenerate charm quarks. At leading order the effective theory is a pure gauge theory. By computing ratios of hadronic scales we have direct access to the power corrections in the effective theory. We show that these corrections follow the expected leading behavior, which is quadratic in the inverse charm quark mass.
© The Authors, published by EDP Sciences, 2018
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