Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-02-25
Phys.Rev.C75:064903,2007
Physics
Nuclear Physics
Nuclear Theory
7 pages, 4 figures, REVTeX, a reference added, to appear in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.75.064903
We reinvestigate the $J/\psi$ dissociation processes induced by the reactions with nucleons, $J/\psi + N \to \bar{D}^{(*)} + \Lambda_c$, in the meson-exchange model. Main constraints used in this work are vector-meson dominance and charm vector-current conservation. We show that the cross section for $J/\psi + N \to \bar{D} + \Lambda_c$ can be larger than that for $J/\psi + N \to \bar{D}^{*} + \Lambda_c$ when these constraints are imposed. The dependence of the cross sections on the coupling constants is analyzed in detail, and the comparison with the recent quark-interchange model predictions is also made.
Ko Che Ming
Liu Wei
Oh Yongseok
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