TY  - JOUR
AU  - Gamermann, D.
AU  - Garcia-Recio, C.
AU  - Nieves, J.
AU  - Salcedo, L. L.
PY  - 2011
DA  - 2011//
TI  - Odd-parity light baryon resonances
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 056017
EP  - 30pp
VL  - 84
IS  - 5
PB  - Amer Physical Soc
AB  - We use a consistent SU(6) extension of the meson-baryon chiral Lagrangian within a coupled channel unitary approach in order to calculate the T matrix for meson-baryon scattering in the s wave. The building blocks of the scheme are the pi and N octets, the rho nonet and the UDELTA; decuplet. We identify poles in this unitary T matrix and interpret them as resonances. We study here the nonexotic sectors with strangeness S = 0, -1, -2, -3 and spin J = 1/2, 3/2 and 5/2. Many of the poles generated can be asociated with known N, UDELTA;, sigma, Lambda, Xi and Omega resonances with negative parity. We show that most of the low-lying three and four star odd-parity baryon resonances with spin 1/2 and 3/2 can be related to multiplets of the spin-flavor symmetry group SU(6). This study allows us to predict the spin-parity of the Xi (1620), Xi (1690), Xi (1950), Xi (2250), Omega (2250) and Omega (2380) resonances, which have not been determined experimentally yet.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1104.2737
UR  - https://doi.org/10.1103/PhysRevD.84.056017
DO  - 10.1103/PhysRevD.84.056017
LA  - English
N1  - WOS:000294404700008
ID  - Gamermann_etal2011
ER  -