Measurement of the Decay Amplitudes and Branching Fractions of $B\to J/\psi K^{*}$ and $B\to J/\psi K$ Decays

TL;DR

This paper reports the first full angular analysis of specific B meson decays, determining decay amplitudes and updating branching fractions, providing detailed insights into these decay processes.

Contribution

It presents the first complete angular analysis of B0 and B+ decays to J/psi K* and updates their branching fractions, advancing understanding of these decay modes.

Findings

First full angular analysis of B0 and B+ decays to J/psi K*

Determination of decay amplitudes for these modes

Updated branching fractions for B --> J/psi K and B --> J/psi K*

Abstract

Using data taken with the CLEO II detector, we present the first full angular analysis in the color-suppressed modes B0 --> J/psi K*0 and B+ --> J/psi K*+. This leads to a complete determination of the decay amplitudes of these modes. In addition, we update the branching fractions for B --> J/psi K and B --> J/psi K*.