Narrow-width tetraquarks in large-Nc QCD

Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian

Publications: Contribution to journalMeeting abstract/Conference paperPeer Reviewed


The properties of possibly existing tetraquarks are studied in the large-Nc limit of QCD by means of four-point correlation functions of meson currents. The necessity of a detailed analysis of the singularities of Feynman diagrams, by means of the Landau equations, to recognize those diagrams that might contribute to the formation of tetraquark states, is emphasized. It is found, in general, that tetraquarks, if they exist, should have narrow widths of the order of Nc −2.

Original languageEnglish
Article number02111
Number of pages8
JournalEPJ Web of Conferences
Publication statusPublished - 3 Aug 2018
Event6th International Conference on New Frontiers in Physics, ICNFP 2017 - Crete, Greece
Duration: 17 Aug 201729 Aug 2017

Austrian Fields of Science 2012

  • 103034 Particle physics

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