TL;DR
This paper reports the identification of key charmonium states and resolves a longstanding discrepancy in their decay widths, advancing understanding of quarkonium spectroscopy.
Contribution
It provides new experimental measurements of charmonium states eta_c(2 1S0) and h_c(1 1P1), and clarifies the decay width of chi_c2.
Findings
Identification of eta_c(2 1S0) and h_c(1 1P1) states
Resolution of the Gamma_(gamma gamma)(chi_c2) discrepancy
Enhanced understanding of charmonium spectroscopy
Abstract
At CLEO, the charmonium singlet states eta_c(2 1S0) and h_c(1 1P1) have been firmly identified and a long standing discrepancy for Gamma_(gamma gamma)(chi_c2) has been resolved.
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