TY  - JOUR
AU  - Peláez Sagredo, José Ramón
AU  - Pennington, M. R.
AU  - Ruiz de Elvira, Jacobo
AU  - Wilson, D. J.
PY  - 2011
DO  - 10.1103/PhysRevD.84.096006
SN  - 1550-7998
UR  - https://hdl.handle.net/20.500.14352/44814
T2  - Physical review D
AB  - The leading 1=N_c behavior of unitarized chiral perturbation theory distinguishes the nature of the ρ and the : The is a qq̅  meson, while the σ is not. However, semilocal duality between resonances and Regge behavior cannot be satisfied for larger...
LA  - eng
PB  - Amer Physical Soc
KW  - Energy sum-rules
KW  - Pion-pion scattering
KW  - N-C behavior
KW  - Elastic-scattering
KW  - One-loop
KW  - Resonances
KW  - Lagrangians
KW  - Amplitudes
KW  - Model
KW  - Nonet
TI  - Chiral perturbation theory, the 1/N_c expansion and Regge behavior determine the structure of the lightest scalar meson
TY  - journal article
VL  - 84
ER  -