Understanding B→D*-NN? and its implications
Journal
Physical Review D
Journal Volume
547
Journal Issue
3-4
Date Issued
2002
Author(s)
Abstract
The CLEO Collaboration recently reported the observation of the B 0→D*-pn̄ mode at a rate of only a factor of 4-5 lower than B0→D*-ρ+ and D*-π+. We try to understand this with a factorization approach of current produced nucleon pairs. The baryon weak vector current form factors are related by isospin rotation to nucleon electromagnetic form factors. By using GMp,n measured from e +e-→N̄N and pp̄→e+e - processes, assuming factorization of the B0→ D*- transition and pn̄ pair production, we are able to account for up to 60% of the observed rate. The remainder is argued to arise from the-axial vector current. The model is then applied to B decays to other mesons plus pn̄ modes and D*- plus strange baryon pairs. © 2002 The American Physical Society.
Type
journal article