Decay constants, semi-leptonic and non-leptonic decays in a Bethe-Salpeter Model

Abstract

We evaluate the decay constants for the B and $D$ mesons and the form factors for the semileptonic decays of the B meson to $D$ and $D^{\ast }$ mesons in a Bethe-Salpeter model. From data we extract $V_{cb}=0.039\pm 0.002$ from $\bar{B}\to D^{\ast }l\bar{\nu }$ and $V_{cb}=0.037\pm 0.004$ from $\bar{B}\to Dl\bar{\nu }$ decays. The form factors are then used to obtain non-leptonic decay partial widths for $B\to D\pi (K)$ and $B\to DD(D_s)$ in the factorization approximation.

15 Pages, 3 Postscript figures (available also from [email protected])

References in corpus (1)

• Measurement of the $\bar{B}\to D\ell \bar{\nu }$ Partila Width and Form Factor Parameters

Cited by in corpus (13)

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• Nonleptonic $B\to D^{(\ast )}{D}_{sJ}^{(\ast )}$ decays and the nature of the orbitally excited charmed-strange mesons
• Extracting γfrom Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)- Decays
• Purely leptonic decays of the ground charged vector mesons
• Nonleptonic ${\Lambda }_b$ decays to $D_s(2317)$, $D_s(2460)$ and other final states in Factorization
• Obtaining CKM Phase Information from B Penguin Decays
• Non Standard $\eta -{\eta }^{\prime }$ mixing and the Nonleptonic B and ${\Lambda }_b$ Decays to $\eta$ and ${\eta }^{\prime }$
• A Measurement of gamma from the Decays Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)-