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Abstract
"Filling up the Two-Body Partial Decay Width of P-Wave Charmonia
with the Color Octet Contribution"
S. M. H. Wong
School of Physics and Astronomy, University of
Minnesota, Minneapolis, Minnesota 55455, USA
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Comparing particle data group and the more recent Beijing
Spectrometer Collaboration (BES) measurements of the partial
two-body decay widths of P-wave charmonia into pseudoscalars
and proton-antiproton with up-to-date theoretical calculations
shows that the color singlet valence Fock state give results
that are too small and therefore unable to account for the
experimental partial widths. Another explanation is therefore
required. We argue and show explicitly that the somewhat foreign
inclusion of, foreign because of the exclusive nature of the above
processes, the color octet charmonium higher state is the answer.
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