$D^{*}D ρ$ vertex from QCD sum rules

Details $D^{*}D ρ$ vertex from QCD sum rules $D^{*}D ρ$ vertex from QCD sum rules

2010-03-12

arxiv.org/abs/1003.2604v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 6 figures

Scientific paper

We calculate the form factors and the coupling constant in the $D^{*}D \rho $
vertex in the framework of QCD sum rules. We evaluate the three point
correlation functions of the vertex considering both $ D $ and $ \rho $ mesons
off--shell. The form factors obtained are very different but give the same
coupling constant: $g_{D^{*}D \rho} = 4.1 \pm 0.1$ GeV$^{-1}$.

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