Production Rate of Ds+Ds- at φ(4030) |
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| Authors: | Kuang-Ta CHAO Yi-Bing DING |
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| Institution: | 1. Department of Physics, Peking University, Beijing 100871, China;
2. Department of Physics, The Graduate School at Beijing, University of Science and Technology of China, Academia Sinica, Beijing 100039, China;
3. CCAST (World Laboratory), P. O. Box 8730, Beijing 100080, China |
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| Abstract: | By using a generalized relativistic quark pair creation model (QPCM), the hadronic decay processes of φ(4030), assigned as the 3S state of cc, are investigated. The relative rates of φ(4030) → DD, DD*+DD*, D*D*,and in particular Ds+Ds- are calculated and compared with data. The nodes of the radially excited wavefunctions of charmonium states are found to be significant for these decay processes. Considering the SU(3) suppression factor of ~3 for the s quark pair creation relative to the u and d quarks, we obtain σ(e+e- → φ4(4030) → Ds+Ds-) ~ 0.9 nb. |
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