2026-06-29T01:17:55Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/586572023-08-25T10:26:35Zcom_20.500.14352_14col_20.500.14352_15
Chiral perturbation theory and the f(2)(1270) resonance
Dobado González, Antonio
Peláez Sagredo, José Ramón
53
Pion-Pion Scattering
One-Loop
Meson Interactions
Form-Factors
Low-Energy
Lagrangians
Unitarization
Amplitude
Física (Física)
22 Física
©2002 The American Physical Society.
This work was supported by the Spanish CICYT projects
FPA2000-0956, PB98-0782 and BFM2000-1326
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.
Spanish CICYT
Depto. de Física Teórica
Fac. de Ciencias Físicas
TRUE
pub
2023-06-20T18:48:06Z
2023-06-20T18:48:06Z
2002-04-01
journal article
https://hdl.handle.net/20.500.14352/58657
0556-2821
10.1103/PhysRevD.65.077502
eng
FPA2000-0956
PB98-0782
BFM2000-1326
open access
application/pdf
American Physical Society