TY  - JOUR
AU  - Nieves, J.
AU  - Pich, A.
AU  - Ruiz Arriola, E.
PY  - 2011
DA  - 2011//
TI  - Large-N(C) properties of the rho and f(0)(600) mesons from unitary resonance chiral dynamics
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 096002
EP  - 20pp
VL  - 84
IS  - 9
PB  - Amer Physical Soc
AB  - We construct pi pi amplitudes that fulfill exact elastic unitarity, account for one-loop chiral perturbation theory contributions and include all 1/N(C) leading terms, with the only limitation of considering just the lowest-lying nonet of exchanged resonances. Within such a scheme, the N(C) dependence of sigma and rho masses and widths is discussed. Robust conclusions are drawn in the case of the rho resonance, confirming that it is a stable meson in the limit of a large number of QCD colors, N(C). Less definitive conclusions are reached in the scalar-isoscalar sector. With the present quality of data, we cannot firmly conclude whether or not the N(C) = 3 f(0)(600) resonance completely disappears at large N(C) or if it has a subdominant component in its structure, which would become dominant for a number of quark colors sufficiently large.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1107.3247
UR  - https://doi.org/10.1103/PhysRevD.84.096002
DO  - 10.1103/PhysRevD.84.096002
LA  - English
N1  - WOS:000296890300012
ID  - Nieves_etal2011
ER  -