QCD sum rules with two-point correlation function

Details QCD sum rules with two-point correlation function QCD sum rules with two-point correlation function

1999-02-12

arxiv.org/abs/nucl-th/9902031v1

Nucl.Phys. A670 (2000) 64-67

Physics

Nuclear Physics

Nuclear Theory

4 pages, LaTex, Talk presented at the KEK-Tanashi International Symposium on ``Physics of Hadrons and Nuclei'', Dec. 14-17, 19

Scientific paper

10.1016/S0375-9474(00)00070-1

We construct three different sum rules from the two-point correlation function with pion, $i\int d^4x e^{iq\cdot x} <0| T J_N(x) {\bar J}_N(0)|\pi(p)>$, 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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