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Heavy-light decay constants from the step scaling method

Filippo Palombi
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Abstract

We discuss results for the heavy-light decay constants in the continuum limit of quenched lattice QCD from finite size scaling techniques. We disentangle the simultaneous presence of the different energy scales characterizing heavy-light physics by first performing simulations at the unphysical volume L_0=0.4 fm, and then evolving the results towards the infinite volume. We find f_{Bs}= 192(6)(4) MeV and f_{Ds}=240(5)(5) MeV. The approach has been developed by the APE group at the University of Rome ``Tor Vergata''.

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Filippo Palombi. 2003-10-03. Heavy-light decay constants from the step scaling method. https://doi.org/10.1016/s0920-5632(03)02576-3

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