We provide a rigorous basis for factorization for a large class of non-leptonic twobody B-meson decays in the heavy-quark limit. The resulting factorization formula incorporates elements of the naive… (More)

In the heavy-quark limit, the hadronic matrix elements entering nonleptonic B-meson decays into two light mesons can be calculated from first principles including " nonfactorizable "… (More)

(RBC and UKQCD Collaborations) 1Physics Department, University of Connecticut, Storrs, CT 06269-3046, USA 2RIKEN-BNL Research Center, Brookhaven National Laborator y, Upton, NY 11973, USA 3SUPA,… (More)

By imposing twisted boundary conditions on quark fields it is possible to access components of momenta other than integer multiples of 2π/L on a lattice with spatial volume L. We use Chiral… (More)

The introduction of partially twisted boundary conditions allows weak and electromagnetic form factors to be evaluated at specified values of the hadronic momenta (and hence momentum transfers) in… (More)

We compute the electromagnetic form factor of a “pion” with mass mπ = 330MeV at low values of Q2 ≡ −q2, where q is the momentum transfer. The computations are performed in a lattice simulation using… (More)

We present the first direct evaluation of ∆I = 3/2 K → ππ matrix elements with the aim of determining all the low-energy constants at NLO in the chiral expansion. Our numerical investigation… (More)

We present a study of the finite-volume two-pion matrix elements and correlation functions of the I = 0 scalar operator, in full and partially quenched QCD, at one-loop order in chiral perturbation… (More)

We compute the two-loop term in the perturbation series for the quark-mass in the lattice Heavy Quark Effective Theory (HQET). This is an ingredient in the matching factor required to obtain the… (More)

We present the first lattice calculation of the B-meson binding energy Λ and of the kinetic energy −λ1/2mQ of the heavy-quark inside the pseudoscalar B-meson. This calculation has required the… (More)