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arXiv · 1510.06648

Do the $P_c^+$ Pentaquarks Have Strange Siblings?

Richard F. Lebed
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Abstract

The recent LHCb discovery of states $P_c^+(4380)$, $P_c^+(4450)$, believed to be $c\bar c uud$ pentaquark resonances, begs the question of whether equivalent states with $c\bar c \to s\bar s$ exist, and how they might be produced. The precise analogue to the $P_c^+$ discovery channel $Λ_b \to J/ψ\, K^- \! p$, namely, $Λ_c \to ϕπ^0 \! p$, is feasible for this study and indeed is less Cabibbo-suppressed, although its limited phase space suggests that evidence of a $s\bar s uud$ resonance $P_s^+$ would be confined to the kinematic endpoint region.

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Richard F. Lebed. 2015-12-22. Do the $P_c^+$ Pentaquarks Have Strange Siblings?. https://doi.org/10.1103/physrevd.92.114030

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