The continuum and interference effect in $e^+e^-\to D^0\bar{D}^0, D^+D^-$ processes

Details The continuum and interference effect in $e^+e^-\to D^0\bar{D}^0, D^+D^-$ processes The continuum and interference effect in $e^+e^-\to D^0\bar{D}^0, D^+D^-$ processes

2006-10-30

arxiv.org/abs/hep-ph/0610395v2

Mod.Phys.Lett.A23:3113-3121,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 figures, some discussion and one figure added

Scientific paper

10.1142/S0217732308026406

In the $e^+e^-$ annihilation processes $e^+e^-\to D^0\bar{D}^0, D^+D^-$ near or above the threshold of $D\bar{D}$, there are not only the resonance contribution $e^+e^-\to \psi (3770)\to D^0\bar{D}^0, D^+D^-$, but also the continuum contribution through virtual photon directly $e^+e^-\to \gamma^*\to D^0\bar{D}^0, D^+D^-$. The amplitudes through virtual photon directly and through resonance can interfere seriously. We consider the continuum and interference effect in the $D\bar{D}$ production process in $e^+e^-$ annihilation. We find that the effect is significant near and above the threshold of the $D\bar{D}$ mesons.

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