Lattice QCD strategy interpolates sub-physical mass data with OPE to obtain the inclusive anti-B_s to X_sc l nu decay rate, yielding 7% precision on limited ETMC ensembles via a new four-point correlator method.
Hashimoto, PTEP2017, 053B03 (2017), 1703.01881
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A low-rank SVD-truncated transfer-matrix GEVP with extrapolation in the eigenvalue variance recovers ground-state energies and matrix elements from noisy lattice correlators without assuming ground-state dominance.
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Inclusive $\bar B_s\mapsto X_{\bar sc} \ell \bar \nu$ decays from lattice QCD: computational strategy and a first physical result
Lattice QCD strategy interpolates sub-physical mass data with OPE to obtain the inclusive anti-B_s to X_sc l nu decay rate, yielding 7% precision on limited ETMC ensembles via a new four-point correlator method.
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Unbiased Krylov subspace method for the extraction of ground state from lattice correlators
A low-rank SVD-truncated transfer-matrix GEVP with extrapolation in the eigenvalue variance recovers ground-state energies and matrix elements from noisy lattice correlators without assuming ground-state dominance.