RT Journal Article
T1 Meson-meson scattering within one-loop chiral perturbation theory and its unitarization
A1 Gómez Nicola, Ángel
A1 Peláez Sagredo, José Ramón
AB We present a complete one-loop calculation of all the two-meson scattering amplitudes within the framework of SU(3) chiral perturbation theory, which includes pions, kaons, and the eta. In addition, we have unitarized these amplitudes with the coupled channel inverse amplitude method, which simultaneously ensures the good low energy properties of chiral perturbation theory and unitarity. We show how this method provides a remarkable description of meson-meson scattering data up to 1.2 GeV including the scattering lengths and the generation of seven light resonances, which is consistent with previous determinations of the chiral parameters. Particular attention is paid to discussing the differences and similarities of this work with previous analyses in the literature.
PB Amer Physical Soc
SN 0556-2821
YR 2002
FD 2002-03
LK https://hdl.handle.net/20.500.14352/59577
UL https://hdl.handle.net/20.500.14352/59577
LA eng
NO © Amer Physical Soc.The authors thank A. Dobado for useful comments and discussions. F. J. Ll-E thanks P. Bicudo, S. Cotanch, P. Maris, E. Ribeiro and A. Szczepaniak too. Work supported from the Spanish CICYT projects, FPA2000-0956,PB98-0782 and BFM2000-1326.
NO CICYT
DS Docta Complutense
RD 28 abr 2025