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arXiv · hep-ph/0111140

Chiral Perturbation Theory and the f2(1270) resonance

A. Dobado·J. R. Pelaez
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Abstract

Within Chiral Perturbation Theory, we study elastic pion scattering in the I=0, J=2, channel, whose main features are the f2(1270) resonance and the vanishing of the lowest order. By means of a chiral model that includes an explicit resonance coupled to pions, we describe the data and calculate the resonance contribution to the O(p^4) and O(p^6) chiral parameters. We also generalize the Inverse Amplitude Method to higher orders, which allows us to study channels with vanishing lowest order. In particular, we apply it to the I=0,J=2 case, finding a good description of the f2(1270) resonance, as a pole in the second Riemann sheet.

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A. Dobado, J. R. Pelaez. 2001-11-12. Chiral Perturbation Theory and the f2(1270) resonance. https://doi.org/10.1103/physrevd.65.077502

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