Feasibility of studying the resonance using femtoscopy

Abstract

The feasibility of using femtoscopy to experimentally study the resonance is considered. The resonance is challenging to study due to its broad width and proximity in mass to the , both of which predominantly decay via the πK channel. One of the main interests in the is that it is considered a candidate for a tetraquark state. It is proposed to use two-particle femtoscopic methods with pairs produced in proton–proton and heavy ion collisions assuming a strong final-state interaction between them due to elastic scattering and/or via the resonance. Calculations of correlation functions are made to estimate the strength of these final-state interactions and to see if this signal can be adequately separated from the background. A possible signature of diquark versus tetraquark behavior of the final-state interaction is also discussed.