Absolute Branching Fraction Measurements of Exclusive D^+ Semileptonic Decays
G. S. Huang, et al. (CLEO Collaboration)
TL;DR
This paper reports precise measurements of the absolute branching fractions for various exclusive D+ semileptonic decays, including the first observation of D+ to omega e+ nu_e, and tests of isospin invariance.
Contribution
It provides improved measurements of D+ semileptonic decay branching fractions and reports the first observation of D+ to omega e+ nu_e, enhancing understanding of charm semileptonic decays.
Findings
Measured branching fractions for D+ decays to K0B e+ nu_e, pi0 e+ nu_e, K0B* e+ nu_e, and rho0 e+ nu_e.
First observation and measurement of D+ to omega e+ nu_e.
Most precise tests of isospin invariance in D0 and D+ semileptonic decays.
Abstract
Using data collected at the psi(3770) resonance with the CLEO-c detector at the Cornell e+e- storage ring, we present improved measurements of the absolute branching fractions of D+ decays to K0B e+ nu_e, pi0 e+ nu_e, K0B* e+ nu_e, and rho0 e+ nu_e, and the first observation and absolute branching fraction measurement of D+ --> omega e+ nu_e. We also report the most precise tests to date of isospin invariance in semileptonic D0 and D+ decays.
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