B ---> D(s) pi and the tree amplitude in B ---> pi+ pi-
Journal
Physical Review
Journal Volume
D66
Pages
057503
Date Issued
2002-06
Author(s)
Abstract
The recently observed decay B0→Ds +π- is expected to proceed mainly by means of a tree amplitude in the factorization limit: B0→π-(W +)*, (W+)*→Ds+. Under this assumption, we predict the corresponding contribution of the tree amplitude to B0→π+π-. We indicate the needed improvements in data that will allow a useful estimate of this amplitude with errors comparable to those accompanying other methods. Since the factorization hypothesis for this process goes beyond that proved in most approaches, we also discuss independent tests of this hypothesis. © 2002 The American Physical Society.
Type
journal article