TY  - JOUR
AU  - Garcia-Recio, C.
AU  - Geng, L. S.
AU  - Nieves, J.
AU  - Salcedo, L. L.
PY  - 2011
DA  - 2011//
TI  - Low-lying even-parity meson resonances and spin-flavor symmetry
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 016007
EP  - 30pp
VL  - 83
IS  - 1
PB  - Amer Physical Soc
AB  - Based on a spin-flavor extension of chiral symmetry, a novel s-wave meson-meson interaction involving members of the rho nonet and of the pi octet is introduced, and its predictions are analyzed. The starting point is the SU(6) version of the SU(3)-flavor Weinberg-Tomozawa Lagrangian. SU(6) symmetry-breaking terms are then included to account for the physical meson masses and decay constants in a way that preserves (broken) chiral symmetry. Next, the T-matrix amplitudes are obtained by solving the Bethe-Salpeter equation in a coupled-channel scheme, and the poles are identified with their possible Particle Data Group counterparts. It is shown that most of the low-lying even-parity Particle Data Group meson resonances, especially in the J(P) = 0(+) and 1(+) sectors, can be classified according to multiplets of SU(6). The f(0)(1500), f(1)(1420), and some 0(+)(2(++)) resonances cannot be accommodated within this scheme, and thus they would be clear candidates to be glueballs or hybrids. Finally, we predict the existence of five exotic resonances (I >= 3/2 and/or vertical bar Y vertical bar = 2) with masses in the range of 1.4-1.6 GeV, which would complete the 27(1), 10(3), and 10(3)* multiplets of SU(3) circle times SU(2).
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1005.0956
UR  - https://doi.org/10.1103/PhysRevD.83.016007
DO  - 10.1103/PhysRevD.83.016007
LA  - English
N1  - ISI:000286765100008
ID  - Garcia-Recio_etal2011
ER  -