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arXiv · 0712.3745

On the eta(b) => J/psi J/psi decay

Pietro Santorelli
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Abstract

It has been argued long ago that eta(b) could be observed through the eta(b) => J/psi(=> mu+ mu-) J/psi(=> mu+ mu-) decay chain. Recent calculations indicate that the width of eta(b) into two J/psi is almost three order of magnitude smaller than the one into the D D*. We study the effects of final state interactions due to the D D* intermediate state on the J/psi J/psi final state. We find that the inclusion of this contribution may enhance the short distance branching ratio of about two orders of magnitude.

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Pietro Santorelli. 2007-12-21. On the eta(b) => J/psi J/psi decay. https://doi.org/10.1063/1.2823838

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