Impact of clustering inside compact tetraquarks

TL;DR

This paper investigates how compact tetraquarks can transform into molecular-like structures due to their interactions with mesonic clusters, using an effective field theory approach.

Contribution

It introduces a model where compact tetraquarks are treated as elementary particles and studies their deformation into molecular states through mesonic coupling.

Findings

Compact tetraquarks can evolve into molecular states under mesonic interactions.

The effective field theory approach captures the structural transition.

Tetraquark states are sensitive to mesonic cluster couplings.

Abstract

Due to the reducibility of tetraquark operators into mesonic clusters, a strong interplay exists in tetraquarks between compact and molecular structures. This issue is studied within an effective field theory approach, where the compact tetraquark is treated as an elementary particle. Under the influence of the coupling to the mesonic clusters, an initially formed compact tetraquark bound state is deformed towards a new structure of the molecular type, having the attributes of a shallow bound state.