TY  - JOUR
AU  - Garcia-Recio, C.
AU  - Nieves, J.
AU  - Romanets, O.
AU  - Salcedo, L. L.
AU  - Tolos, L.
PY  - 2013
DA  - 2013//
TI  - Odd parity bottom-flavored baryon resonances
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 034032
EP  - 9pp
VL  - 87
IS  - 3
PB  - Amer Physical Soc
AB  - The LHCb Collaboration has recently observed two narrow baryon resonances with beauty. Their masses and decay modes look consistent with the quark model orbitally excited states Lambda(b)(5912) and Lambda(b)*(5920), with quantum numbers J(P) = 1/2(-) and 3/2(-), respectively. We predict the existence of these states within a unitarized meson-baryon coupled-channel dynamical model, which implements heavy-quark spin symmetry. Masses, quantum numbers and couplings of these resonances to the different meson-baryon channels are obtained. We find that the resonances Lambda(0)(b)(5912) and Lambda(0)(b)(5920) are heavy-quark spin symmetry partners, which naturally explains their approximate mass degeneracy. Corresponding bottom-strange baryon resonances are predicted at Xi(b)(6035.4) (J(P) = 1/2(-)) and Xi(b)(6043.3) (J(P) = 3/2(-)). The two Lambda(b) and two Xi(b) resonances complete a multiplet of the combined symmetry SU(3)-flavor times heavy-quark spin.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1210.4755
UR  - https://doi.org/10.1103/PhysRevD.87.034032
DO  - 10.1103/PhysRevD.87.034032
LA  - English
N1  - WOS:000315149000004
ID  - Garcia-Recio_etal2013
ER  -