B-factories are the producing large number of charm mason and charmonium too. Apparently itbecomes a charm factory. Belle detector has observed many new resonance states, some of themare compatible with the existing charmonium models, but some of them are not. Observation ofsome of these new states and study on their properties are discussed in this talk. Charmonium orcharmoniumlike mesons are produced through B-meson, with an association of ISR photon or intwo photon interactions.
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