Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-07-22
Phys.Rev.D74:117502,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
minor corrections during proof-reading
Scientific paper
10.1103/PhysRevD.74.117502
The recent measurements by CLEO Collaboration for the inclusive J/Psi and Psi(2S) production in Upsilon(1S) decay and our previous calculation are analyzed. The J/Psi momentum spectrum and the production ratio of Psi(2S) versus J/Psi favour Upsilon to J/Psi(Psi(2S)) + ccbar g as the dominant contribution. We point out that the differences between the experimental data and our previous results are mainly originated from the setting of the parameter charm quark mass. We further suggest the associate strange particle enhancement as a probe for the open charm particles in Upsilon to J/Psi (Psi(2S)) + ccbar g.
Han Wei
Li Shi-Yuan
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