6533b7d8fe1ef96bd126b4a2
RESEARCH PRODUCT
Improved B ->pi l nu(iota) form factors from the lattice
Ken C. BowlerLuigi Del DebbioJonathan M. FlynnLaurent LellouchVictor LeskChris M. MaynardJuan Miguel Nieves PamplonaD.g. Richardssubject
High Energy Physics::LatticeFísicaHigh Energy Physics::Experimentdescription
We present the results of a lattice computation of the form factors for B-0 --> pi(-)l(+)nu(l) decays near zero-recoil. These results will allow a determination of the CKM matrix element \V-ub\ when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and rate to the full recoil range. Our computation is performed in the quenched approximation to QCD on a 24(3) x 48 lattice at beta = 6.2, using a non-perturbatively O(a)-improved action. The masses of all light valence quarks involved are extrapolated to their physical values.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 |