Pentaquarks and strange tetraquark mesons

TL;DR

This paper explores the potential existence and experimental signatures of exotic pentaquark and strange tetraquark states in specific baryon decay processes, highlighting their possible to mimic broad resonance signals.

Contribution

It investigates the role of strange tetraquark mesons in baryon decay channels and discusses how these exotic states could be observed or mistaken for other signals.

Findings

Exotic ($csar car u$)-states may manifest in the $K^-J/psi$ channel.

Strange tetraquark mesons can imitate broad bumps in the $pJ/psi$-channel.

Potential for these states to be mistaken for other resonance signals.

Abstract

We consider the interplay of the pentaquark states and strange tetraquark states in the decay $\Lambda^0_b\to K^-J/\psi p$. Possible existence of ($cs\bar c\bar u$)-states is taken up and their manifestation in the $K^-J/\psi $-channel is discussed. It is emphasised that these exotic mesons can imitate broad bumps in the in the $pJ/\psi $-channel.