Scalar mesons and tetraquarks by means of lattice QCD
Date
2012Author
Wagner, M.![ORCID logo](https://orcid.org/sites/default/files/images/orcid_16x16.png)
Gravina, M.
Daldrop, J. O.
Urbach, C.
Brida, M. D.
Scorzato, L.
Wiese, C.
Source
Proceedings of Science10th Conference on Quark Confinement and the Hadron Spectrum, Confinement 2012
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We study the light scalar mesons a0(980) and κ using Nf = 2+1+1 flavor lattice QCD. In order to probe the internal structure of these scalar mesons, and in particular to identify, whether a sizeable tetraquark component is present, we use a large set of operators, including diquarkantidiquark, mesonic molecule and two-meson operators. The inclusion of disconnected diagrams, which are technically rather challenging, but which would allow us to extend our work to e.g. the f0(980) meson, is introduced and discussed. © Copyright owned by the author(s).