TY  - JOUR
AU  - Nieves, J.
AU  - Pavao, R.
AU  - Tolos, L.
PY  - 2020
DA  - 2020//
TI  - Xi(c) and Xi(b) excited states within a SU(6)(lsf) x HQSS model
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 22 - 12pp
VL  - 80
IS  - 1
PB  - Springer
AB  - We study odd parity J = 1/2 and J = 3/2 Xi(c) resonances using a unitarized coupled-channel framework based on a SU(6)(lsf) xHQSS-extended Weinberg-Tomozawa baryon-meson interaction, while paying a special attention to the renormalization procedure. We predict a large molecular Lambda(c)(K) over bar component for the Xi(c) (2790) with a dominant 0(-) light-degree-of-freedom spin configuration. We discuss the differences between the 3/2(-) Lambda(c)(2625) and Xi(c)(2815) states, and conclude that they cannot be SU(3) siblings, whereas we predict the existence of other Xi(c)-states, one of them related to the two-pole structure of the Lambda(c)(2595). It is of particular interest a pair of J = 1/2 and J = 3/2 poles, which form a HQSS doublet and that we tentatively assign to the Xi(c)(2930) and Xi(c)(2970), respectively. Within this picture, the Xi(c)(2930) would be part of a SU(3) sextet, containing either the Omega(c)(3090) or the Omega(c)(3119), and that would be completed by the Sigma(c)(2800). Moreover, we identify a J = 1/2 sextet with the Xi(b)(6227) state and the recently discovered Sigma(b)(6097). Assuming the equal spacing rule and to complete this multiplet, we predict the existence of a J = 1/2 Omega(b) odd parity state, with a mass of 6360 MeV and that should be seen in the Xi(b) (K) over bar channel.
SN  - 1434-6044
UR  - https://arxiv.org/abs/1911.06089
UR  - https://doi.org/10.1140/epjc/s10052-019-7568-8
DO  - 10.1140/epjc/s10052-019-7568-8
LA  - English
N1  - WOS:000514590400004
ID  - Nieves_etal2020
ER  -