TY  - CONF
A1  - Wagner, Marc
A1  - Alexandrou, Constantia
A1  - Daldrop, Jan Oliver
A1  - Dalla Brida, Mattia
A1  - Gravina, Mario
A1  - Scorzato, Luigi
A1  - Urbach, Carsten
A1  - Wiese, Christian
T1  - Scalar mesons and tetraquarks by means of lattice QCD
T2  - Proceedings of Science
N2  - 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.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27735
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-277357
SN  - 1824-8039
N1  - Xth Quark Confinement and the Hadron Spectrum. 8-12 October 2012. TUM Campus Garching, Munich, Germany
VL  - 2012
SP  - 1
EP  - 8
PB  - Scuola Internazionale Superiore di Studi Avanzati
CY  - Trieste
ER  -