Phys. Rev. Lett. 65, 2951–2954 (1990)Factorization test using B¯0→D*+π- and an estimate of fDs using B→DDs-Received 24 September 1990; published in the issue dated 10 December 1990 We describe a test of factorization comparing the decays of the B¯0 meson to D*+π- with D*+l-ν¯l. Assuming that factorization works and using the Isgur and Wise theory of a universal form factor, we estimate the decay constant of the DS meson to be 276±45±44 MeV. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.65.2951
DOI:
10.1103/PhysRevLett.65.2951
PACS:
14.40.Jz, 13.20.Jf, 13.25.+m
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