DOI 10.1007/s100529800702
Exclusive 
and 
decays into
baryon-antibaryon
pairs
Fachbereich Physik, University of Wuppertal, D-42097 Wuppertal, Germany (e-mail: kroll@theorie.physik.uni-wuppertal.de)
Received: 10 March 1997 / Revised version: 18 June 1997 / Published online: 20 February 1998
Abstract
Within a perturbative approach we investigate decays of charmonium
states into baryon-antibaryon pairs. Using a recently proposed wave
function for the nucleon and suitable generalizations of it
to the hyperons and decouplet baryons, we obtain the decay widths for the
channels in reasonable agreement with data. An
important difference to previous work is the use of the c-quark mass
in the perturbative calculation instead of the charmonium mass. As a
consequence of this feature our approach possesses the property that
the 
and the 
decay widths do not scale with a high power
of the ratio of their masses.
Copyright Springer-Verlag
