B meson spectrum and decay constant from Nf=2 simulations

Understand

We report on the status of an ALPHA Collaboration project to extract quantities for B physics phenomenology from Nf=2 lattice simulations.

• The framework is Heavy Quark Effective Theory (HQET) expanded up to the first order of the inverse b-quark mass.
• The couplings of the effective theory are determined by imposing matching conditions of observables computed in HQET with their counterpart computed in QCD.
• That program, based on Nf=2 simulations in a small physical volume with SF boundary conditions, is now almost finished.