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arXiv · hep-ph/0701232

Partial waves and large $N_C$ resonance sum rules

Z. H. Guo·J. J. Sanz Cillero·H. Q. Zheng
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Abstract

Using $1/N_C$ expansion and dispersion theory techniques, without relying on any explicit resonance lagrangian, we generalize the KSRF relation beyond the leading chiral order. Two sum rules for the low energy constants $L_2$, $L_3$ and a new relation between resonance couplings are derived. A rather detailed examination to the new relation is also given.

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Z. H. Guo, J. J. Sanz Cillero, H. Q. Zheng. 2007-06-11. Partial waves and large $N_C$ resonance sum rules. https://doi.org/10.1088/1126-6708%2F2007%2F06%2F030

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