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A status update on the determination of by the ALPHA collaboration
Mattia Dalla Brida, Patrick Fritzsch, Tomasz Korzec +3
The ALPHA collaboration aims to determine with a total error below the percent level. A further step towards this goal can be taken by combining results from the recent…
Perturbative versus non-perturbative decoupling of heavy quarks
Francesco Knechtli, Mattia Bruno, Jacob Finkenrath +2
We simulate a theory with heavy quarks of mass . At energies much smaller than the heavy quarks decouple and the theory can be described by an effective theory which…
Determination of c_sw in N_f=3+1 Lattice QCD with massive Wilson fermions
Patrick Fritzsch, Rainer Sommer, Felix Stollenwerk +1
We develop a strategy for the non-perturbative determination of the O(a)-improvement coefficient c_sw for Wilson fermions with massive sea quarks. The improvement condition is defi…
Non-perturbative Heavy Quark Effective Theory: An application to semi-leptonic B-decays
Michele Della Morte, Jochen Heitger, Hubert Simma +1
We review a lattice strategy how to non-perturbatively determine the coefficients in the HQET expansion of all components of the heavy-light axial and vector currents, including 1/…
Non-perturbative Heavy Quark Effective Theory: Introduction and Status
Rainer Sommer
We give an introduction to Heavy Quark Effective Theory (HQET). Our emphasis is on its formulation non-perturbative in the strong coupling, including the non-perturbative determina…
Non-perturbative computation of the strong coupling constant on the lattice
Rainer Sommer, Ulli Wolff
We review the long term project of the ALPHA collaboration to compute in QCD the running coupling constant and quark masses at high energy scales in terms of low energy hadronic qu…