Investigation of the strange pentaquark candidate P?s ? (4338)0 recently observed by LHCb

Abstract

The recently observed strange pentaquark candidate, P?s?(4338)0, is investigated to provide information about its nature and substructure. To this end, its mass and width through the decay channels P?s?(4338)0?J/?? and P?s?(4338)0??c? are calculated by applying two- and three-point QCD sum rules, respectively. The state is considered as a ?cD¯ meson-baryon molecular structure with spin-parity quantum numbers JP=12-. The obtained mass, mP?s?(4338)0=4338±130 MeV, and width, ?P?s?(4338)0=10.40±1.93 MeV, are consistent with the experimental data within the presented uncertainties. This allows us to assign a ?cD¯ molecular structure of JP=12- for the P?s?(4338)0 state. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3