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Possible new resonance at the threshold in annihilation
S. Dubynskiy, M. B. Voloshin
We argue that the recent CLEO-c data on annihilation into pairs of charmed mesons at c.m. energy around 4.0 GeV are not well described by a single resonance , but…
Two-pion transitions in quarkonium revisited
M. B. Voloshin
Two-pion transitions in charmonium and bottomonium are considered with the leading relativistic effects taken into account. The contribution of the chromo- magnetic interaction of…
Molecular Quarkonium
M. B. Voloshin
I discuss topics related to four-quark states of the `molecular quarkonium' type, i.e. resonances that could be considered as (dominantly) made from a heavy meson and antimeson. Of…
Channel coupling in e+ e- annihilation into heavy meson pairs at the D* {\bar D}* threshold
M. B. Voloshin
A threshold singularity in a heavier meson channel, e.g. , generally reflects in the amplitudes of annihilation into lighter meson pairs, such as $D^* {\ba…