Zusammenfassung
In this Letter we suggest that the obvious discrepancy between theoretical prediction on the non-D (D) over bar decays of psi(3770) and data is to be alleviated by taking final state interaction (FSI) into account. By assuming that psi(3770) overwhelmingly dissociates into D (D) over bar, then the final state interaction induces a secondary process, we calculate the branching ratios of psi(3770) ...
Zusammenfassung
In this Letter we suggest that the obvious discrepancy between theoretical prediction on the non-D (D) over bar decays of psi(3770) and data is to be alleviated by taking final state interaction (FSI) into account. By assuming that psi(3770) overwhelmingly dissociates into D (D) over bar, then the final state interaction induces a secondary process, we calculate the branching ratios of psi(3770) -> D (D) over bar -> J/psi eta, rho pi, omega eta, K*K. Our results show that the branching ratio of psi( 3770) -> non-D (D) over bar can reach up to B-non-D (D) over bar(FSI) = (0.2-1.1)% while typical parameters I = 0.4 GeV-2 and alpha = 0.8-1.3 are adopted. This indicates that the FSI is obviously non-negligible. (C) 2009 Elsevier B.V. All rights reserved.
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