Resonance sum rules from large $N_C$ and partial wave dispersive analysis

Details Resonance sum rules from large $N_C$ and partial wave dispersive analysis Resonance sum rules from large $N_C$ and partial wave dispersive analysis

2008-02-18

arxiv.org/abs/0802.2530v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, contribution to the Workshop on "Scalar meson and Related topics" (Scadron 70), during Feb 11-16, 2008, at IST, Lisbo

Scientific paper

10.1063/1.2973540

Combining large $N_C$ techniques and partial wave dispersion theory to analyze the $\pi\pi$ scattering, without relying on any explicit resonance lagrangian, some interesting results are derived: (a) a general KSRF relation including the scalar meson contribution; (b) a new relation between resonance couplings, with which we have made an intensive analysis in several specific models; (c) low energy constants in chiral perturbation theory related with $\pi\pi$ scattering in terms of the mass and decay width of resonances.

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