Decay of the psi(3770) to Light Hadrons
G.S. Adams, et al, CLEO Collaboration
TL;DR
This paper searches for non-DDbar decay modes of psi(3770) in e+e- collisions, finding a significant signal for PhiEta and providing form factors for several light-hadron final states.
Contribution
It reports the first significant observation of psi(3770) decay to PhiEta and measures form factors for multiple light-hadron channels.
Findings
Significant PhiEta decay signal detected.
Suppression observed in Pi+Pi-Pi0 and RhoPi channels.
Form factors determined for OmegaPi0, RhoEta, RhoEtaPrime.
Abstract
We describe a search for psi(3770) decay to two-body non-DDbar final states in e+e- data produced by the CESR collider and analyzed with the CLEO-c detector. Vector-pseudoscalar production of Rho0Pi0, Rho+Pi-, OmegaPi0, PhiPi0, RhoEta, OmegaEta, PhiEta, RhoEtaPrime, OmegaEtaPrime, PhiEtaPrime, Kstar0 K0bar, and Kstar+K- is studied along with that of BOnePi (BOne0Pi0 and BOne+Pi-) and Pi+Pi-Pi0. A statistically significant signal is found for PhiEta, at an excess cross section of (2.4 +- 0.6) pb [Gamma_{PhiEta} (psi(3770)) =(74 +- 16)Mev], and a suggestive suppression of Pi+Pi-Pi0 and RhoPi. We conclude with form factor determinations for OmegaPi0, RhoEta, and RhoEtaPrime.
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