We simulate a theory with Nf = 2 heavy quarks of mass M. At energies much smaller than M the heavy quarks decouple and the theory can be described by an effective theory which is a pure gauge theory to leading order in 1=M. We present results for the mass dependence of ratios such as t0(M)=t0(0). We compute these ratios from simulations and compare them to the perturbative prediction. The latter relies on a factorisation formula for the ratios which is valid to leading order in 1=M.
Knechtli, F., Bruno, M., Finkenrath, J., Leder, B., Sommer, R. (2015). Perturbative versus non-perturbative decoupling of heavy quarks. In Proceedings of Science. Proceedings of Science (PoS).
Perturbative versus non-perturbative decoupling of heavy quarks
Bruno M.;
2015
Abstract
We simulate a theory with Nf = 2 heavy quarks of mass M. At energies much smaller than M the heavy quarks decouple and the theory can be described by an effective theory which is a pure gauge theory to leading order in 1=M. We present results for the mass dependence of ratios such as t0(M)=t0(0). We compute these ratios from simulations and compare them to the perturbative prediction. The latter relies on a factorisation formula for the ratios which is valid to leading order in 1=M.
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