On a possibility of exotic heavy baryons
M. Praszalowicz
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Pre-published on: August 22, 2018
Published on: August 24, 2018
Abstract
Triggered by a recent announcement by the LHCb Collaboration of five excited Ω0c resonances of small widths
we propose an interpretation based on the Chiral Quark Soliton Model. We argue that three of the LHCb
resonances are parity () excitations of the ground state SU(3) sextets, while the other two with the smallest
widths are exotic pentaquarks that belong to the SU(3) ¯15. We first briefly review
the model and discuss the status of the putative Θ+(1540). Next we show how to generalize the
model to the case of heavy baryons. We test this approach against the ground state ¯3 and 6
heavy baryons, and discuss different excitations that are possible in the Chiral Quark Soliton Model.
We show that the model accommodates two excited ¯3 in the charm sector that are experimentally
observed. Finally we discuss possible assignments of the LHCb Ω0c states
DOI: https://doi.org/10.22323/1.318.0025
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