Abstract
We have calculated the azimuthal angular correlation in the hadronic decay of the lowest-mass ${1}^{\ensuremath{-}\ensuremath{-}}$ bound state of a heavy quark and antiquark produced in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation. The correlation between a plane defined by the hadrons and the plane formed by the beams and the jet axis is found to be much larger than the correlation expected in the continuum final states.
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