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arXiv · hep-ph/0611318

New QCD Sum Rule for $D(0^+)$

Yuan-Ben Dai·Shi-Lin Zhu
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Abstract

We derive a new QCD sum rule for $D(0^+)$ which has only the $Dπ$ continuum with a resonance in the hadron side, using the assumption similar to that has been successfully used in our previous work to the mass of $D_s(0^+)(2317)$. For the value of the pole mass $M_c=1.38 $ GeV as used in the $D_s(0^+)$ case we find that the mass of $D(0^+)$ derived from this sum rule is significantly lower than that derived from the sum rule with the pole approximation. Our result is in agreement with the experimental dada from Belle.

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Yuan-Ben Dai, Shi-Lin Zhu. 2006-11-26. New QCD Sum Rule for $D(0^+)$. https://arxiv.org/abs/hep-ph/0611318

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