On the Limits of Chiral Perturbation Theory

Details On the Limits of Chiral Perturbation Theory On the Limits of Chiral Perturbation Theory

1992-11-06

arxiv.org/abs/hep-ph/9211223v2

Phys.Rev. D47 (1993) 3075-3078

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, Latex, YCTP-P41-92; we have clarified some of the discussions, the conclusions are unchanged

Scientific paper

10.1103/PhysRevD.47.3075

We consider the relation between the breakdown scale of chiral perturbation theory, $\Lambda_\chi$, for large values of $N$ (flavor), and the scale associated with ``new" physical thresholds. This question is addressed using both the linear $\sigma$ model and an asymptotically-free gauge theory to describe the high energy dynamics. It is suggested that the massive physical threshold could be well above $\Lambda_\chi$.

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