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arXiv · hep-ph/9612495

The Long Distance Contribution to $D\toπl^+l^-$

Paul Singer·Da-Xin Zhang
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Abstract

We calculate the long distance contribution to $D^{+,0}\toπ^{+,0}l^+l^-$ decays by the use of a vector meson dominance model, in which the $ϕ$-meson plays the central role. The branching ratios obtained are $10^{-6}$ and a few times $10^{-7}$ for the resonance and non-resonance regions respectively. The analysis includes a calculation of $D^+\toπ^+ϕ$, consistent with the experimental value.

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Paul Singer, Da-Xin Zhang. 1996-12-31. The Long Distance Contribution to $D\toπl^+l^-$. https://doi.org/10.1103/physrevd.55.r1127

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