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 comp
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.
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Metadaten
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):2012/12/07
Date of first Publication:2012/12/07
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2012/12/13
Volume:2012
Pagenumber:8
First Page:1
Last Page:8
Note:
Xth Quark Confinement and the Hadron Spectrum. 8-12 October 2012. TUM Campus Garching, Munich, Germany
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen

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