AUTHOR=Dong Rui-Rui , Su Niu , Chen Hua-Xing , Cui Er-Liang 

TITLE=QCD sum rule study on the fully strange tetraquark states of JPC = 2++

JOURNAL=Frontiers in Physics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1184103

DOI=10.3389/fphy.2023.1184103

ISSN=2296-424X

ABSTRACT=We apply the QCD sum rule method to systematically study the fully-strange tetraquark states with the quantum number J(PC)=2(++). We construct both the diquark-antidiquark and meson-meson currents, and calculate both their diagonal and off-diagonal correlation functions. Based on the obtained results, we further construct three mixing currents that are nearly non-correlated. We use one mixing current to extract the mass of the lowest-lying state to be 2.03+0.16-0.15 GeV, which can be used to explain the f2(2010) as a fully-strange tetraquark state of J(PC)=2(++). This state was observed by BESIII in the phi-phi channel, and we propose to confirm it in the eta(')-eta(') channel.