The e + e − → J/ψD ¯D, J/ψD ¯D ∗ reactions with dynamically generated resonances
نویسنده
چکیده
In two recent reactions by Belle producing DD̄ and DD̄∗ meson pairs, peaks above threshold have been measured in the differential cross sections, possibly indicating new resonances in these channels. We want to study such reactions from the point of view that the D meson pairs are produced from already known or predicted resonances below threshold. Our study shows that the peak in the DD̄∗ production is not likely to be caused by the X(3872) resonance, but the peak seen in DD̄ invariant mass can be well described if the DD̄ pair comes from the already predicted scalar X(3700) resonance.
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تاریخ انتشار 2008