Scalar mesons and tetraquarks by means of lattice QCD
We study the light scalar mesons a_0(980) and kappa using N_f = 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 diquark-antidiquark, 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 f_0(980) meson, is introduced and discussed.
| Author: | Marc Wagner, Constantia Alexandrou, Jan Oliver Daldrop, Mattia Dalla Brida, Mario Gravina, Luigi Scorzato, Carsten Urbach, Christian Wiese |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-277357 |
| ISSN: | 1824-8039 |
| ArXiv Id: | http://arxiv.org/abs/1212.1648 |
| Parent Title (English): | Proceedings of Science |
| Publisher: | Scuola Internazionale Superiore di Studi Avanzati |
| Place of publication: | Trieste |
| Document Type: | Conference Proceeding |
| Language: | English |
| Date of Publication (online): | 07.12.2012 |
| Date of first Publication: | 07.12.2012 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Volume: | 2012 |
| Pagenumber: | 8 |
| First Page: | 1 |
| Last Page: | 8 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Note: | Xth Quark Confinement and the Hadron Spectrum. 8-12 October 2012. TUM Campus Garching, Munich, Germany |
| Licence (German): |  Creative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen |
