TL;DR
This paper reviews current lattice calculations of decay constants and mass splittings for B and D mesons, highlighting the uncertainties and future prospects for improved precision relevant to phenomenology.
Contribution
It provides an overview of lattice QCD results for meson decay constants and discusses the potential for reducing uncertainties in future calculations.
Findings
Current results lack sufficient precision for phenomenology
Uncertainties due to discretization errors are significant
Future improvements could halve the uncertainties
Abstract
The present status of lattice calculations of , and some mass splittings are discussed. When one includes the uncertainties due to discretization errors, the results do not yet have a sufficient precision to be relevant to phenomenological applications. There are, however, good prospects of cutting down the uncertainties by a factor of 2 or more soon.
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