Measurements of the two photon widths of the charmonium states eta/c, chi/c0 and chi/c2.

Savinov, Vladimir ; Fulton, Roger ;
197-202, 1995.
Inspire Record 397180 DOI 10.17182/hepdata.18931

Using the CLEO-II detector at the CESR $e~+e~-$ storage ring running at the center-of-mass energy around 10.6 GeV, we have studied exclusive production of charmonium states in two-photon collisions. Employing a dataset comprising 3.0 ${\rm fb}~{-1}$ we have searched for decays of the $\eta_c$, $\chi_{c0}$ and $\chi_{c2}$ mesons resulting in four charged hadrons. We report on the measurements of the cross sections and two-photon widths of these charmonium states.

1 data table

The first two errors quoted are statistical and systematic,respectively. The third one arises from the uncertainties in the branching ratios of charmed mesons.