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dc.contributor.authorBerlin, J.en
dc.contributor.authorAbdel-Rehim, A.en
dc.contributor.authorAlexandrou, Constantiaen
dc.contributor.authorBrida, M. D.en
dc.contributor.authorFinkenrath, J.en
dc.contributor.authorGravina, M.en
dc.contributor.authorLeontiou, Theodorosen
dc.contributor.authorWagner, M.en
dc.creatorBerlin, J.en
dc.creatorAbdel-Rehim, A.en
dc.creatorAlexandrou, Constantiaen
dc.creatorBrida, M. D.en
dc.creatorFinkenrath, J.en
dc.creatorGravina, M.en
dc.creatorLeontiou, Theodorosen
dc.creatorWagner, M.en
dc.description.abstractTo investigate the light scalar tetraquark candidate a0(980) (quantum numbers JP =0+), a correlation matrix including a variety of two- and four-quark interpolating operators has to be computed. We discuss efficient techniques to compute the elements of this correlation matrix, in particular diagrams with closed quark loops. Furthermore, we present evidence that such diagrams are not negligible given our precision, and their contribution is essential to obtain physically meaningful results. In particular, we find indications of the existence of an "additional" state around the two-particle thresholds of K+ K̄ and η +π, which could correspond to the a0(980) meson. © Copyright owned by the author(s).en
dc.publisherProceedings of Science (PoS)en
dc.sourceProceedings of Scienceen
dc.source34th Annual International Symposium on Lattice Field Theory, LATTICE 2016en
dc.subjectQuantum theoryen
dc.subjectElementary particlesen
dc.subjectLattice theoryen
dc.subjectHigh energy physicsen
dc.subjectLattice QCDen
dc.subjectQuantum numbersen
dc.subjectCorrelation matrixen
dc.subjectTwo particlesen
dc.titleImportance of closed quark loops for lattice QCD studies of tetraquarksen
dc.description.volumePart F128557enΣχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied SciencesΤμήμα Φυσικής / Department of Physics
dc.type.uhtypeConference Objecten
dc.description.notesConference code: 128557</p>en
dc.contributor.orcidLeontiou, Theodoros [0000-0002-4623-2486]
dc.contributor.orcidAlexandrou, Constantia [0000-0001-9136-3621]

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