Beyond Mesons: Unveiling Hidden Tetraquark States
![Tetraquark operators are constructed from displaced quarks and antiquarks arranged in single-site, I-shaped doubly-displaced, and cross-shaped quadruply-displaced configurations, with variations denoted by ‘a’ and ‘b’ representing differing displacement orderings and encompassing two distinct color structures as defined by [latex] Eqs. (12) [/latex] and [latex] (13) [/latex].](https://arxiv.org/html/2603.19192v1/x1.png)
New lattice QCD calculations reveal that accurately describing the energies of light meson resonances requires the inclusion of operators representing more complex, tetraquark configurations.
![Tetraquark operators are constructed from displaced quarks and antiquarks arranged in single-site, I-shaped doubly-displaced, and cross-shaped quadruply-displaced configurations, with variations denoted by ‘a’ and ‘b’ representing differing displacement orderings and encompassing two distinct color structures as defined by [latex] Eqs. (12) [/latex] and [latex] (13) [/latex].](https://arxiv.org/html/2603.19192v1/x1.png)
New lattice QCD calculations reveal that accurately describing the energies of light meson resonances requires the inclusion of operators representing more complex, tetraquark configurations.

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