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

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

2006-11-26

arxiv.org/abs/hep-ph/0611318v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

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Scientific paper

We derive a new QCD sum rule for $D(0^+)$ which has only the $D\pi$ 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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