Discovery of $T_{c\bar s 0}^a(2900)^{0,++}$ implies new charmed-strange pentaquark system

TL;DR

This paper predicts a new charmed-strange pentaquark system based on recent tetraquark discoveries, suggesting experimental searches via weak decays and emphasizing its significance for future particle physics research.

Contribution

It introduces a novel charmed-strange pentaquark system linked to recent tetraquark states, proposing experimental detection methods and exploring its mass spectrum and decay properties.

Findings

Prediction of a new $c\bar s nnn$ pentaquark system

Suggested experimental search channels via $B$ meson and $b$-baryon decays

Emphasis on the importance of this system for future particle zoo developments

Abstract

Inspired by the very recently discovered tetraquark states $T_{c\bar s 0}^a(2900)^{0,++}$ from the LHCb Collaboration, we predict the existence of a new charmed-strange pentaquark system, $c\bar s nnn$, which is closely connected to $c\bar s n\bar n$ by exchanging $\bar n$ into $nn$ with $n=u,d$. Especially, it is suggested to experimentally search for the predicted new pentaquark system via the weak decays of $B$ mesons or $b$-baryons, with the support from the study of the mass spectrum and the decay properties. The predicted new pentaquark system must attract extensive attention from experimentalists and theorists when it constructs the ``particle zoo 2.0" in the near future.