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Chiral perturbation theory and the f(2)(1270) resonance

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Dobado González, Antonio and Peláez Sagredo, José Ramón (2002) Chiral perturbation theory and the f(2)(1270) resonance. Physical Review D , 65 (7). Part b. ISSN 0556-2821

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Official URL: http://prd.aps.org/abstract/PRD/v65/i7/e077502


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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 f(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 f(2)(1270) resonance, as a pole in the second Riemann sheet.


Item Type:Article
Additional Information:

©2002 The American Physical Society.
This work was supported by the Spanish CICYT projects
FPA2000-0956, PB98-0782 and BFM2000-1326

Uncontrolled Keywords:Pion-Pion Scattering, One-Loop, Meson Interactions, Form-Factors, Low-Energy, Lagrangians, Unitarization, Amplitude
Subjects:Sciences > Physics
ID Code:22288
Deposited On:25 Jul 2013 12:11
Last Modified:10 Dec 2018 15:10

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