Investigating the role of tetraquark operators in lattice QCD studies of the $a_0(980)$ and $\hat{I}º$ resonances

Andrew D. Hanlon, Daniel Darvish, Sarah Skinner +7

The role of tetraquark operators in studying the isodoublet strange $\hat{I}º$ and isovector nonstrange $a_0(980)$ scalar mesons in lattice QCD is examined using an ensemble with $m_π\a…