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arXiv · nucl-th/9902031

QCD sum rules with two-point correlation function

Hungchong Kim·Su Houng Lee·Makoto Oka
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Abstract

We construct three different sum rules from the two-point correlation function with pion, $i\int d^4x e^{iq\cdot x} <0| T J_N(x) {\bar J}_N(0)|π(p)>$, beyond the soft-pion limit. The PS and PV coupling schemes in the construction of the phenomenological side are carefully considered in each sum rule. We discuss the dependence of the result on the specific Dirac structure and identify the source of the dependence by making specific models for higher resonances.

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Hungchong Kim, Su Houng Lee, Makoto Oka. 1999-02-12. QCD sum rules with two-point correlation function. https://doi.org/10.1016/s0375-9474(00)00070-1

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