Abstract
Using of data recorded with the CLEO II and CLEO II.V detector configurations at CESR, we have searched for decays to in untagged two-photon interactions. We report an upper limit on the product of the two-photon partial width and the branching fraction, of less than 1.1 eV at the 95% confidence level; systematic uncertainties are included. This data set is four times larger than that used in the previous CLEO publication.
- Received 12 April 2002
DOI:https://doi.org/10.1103/PhysRevD.66.077101
©2002 American Physical Society