We systematically analyze the flavor color spin structure of the pentaquark q4Q system in a constituent quark model based on the chromomagnetic interaction in both the SU(3) flavor symmetric and SU(3) flavor broken case with and without charm quarks. We show that the originally proposed pentaquark state Qsqqq by Gignoux et al. and by Lipkin indeed belongs to the most stable pentaquark configuration, but that when charm quark mass correction based on recent experiments are taken into account, a doubly charmed antistrange pentaquark configuration Pcc (udccs) could be the most attractive flavor exotic configuration that could be stable and realistically searched for at present through the Pcc→ΛcK+K-π+ final states. The proposed final state is just reconstructing K+ instead of π+ in the measurement of Ξcc++→ΛcK-π+π+ reported by the LHCb collaboration and hence measurable immediately.
Bibliographical noteFunding Information:
This work was supported by the Korea National Research Foundation under the Grants No. 2016R1D1A1B03930089 and No. 2017R1D1A1B03028419(NRF), and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (Grant No. 2016R1C1B1016270).
© 2019 authors. Published by the American Physical Society.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)