Narrow-width tetraquarks in large-N<sub>c</sub> QCD
- Author(s)
- Wolfgang Lucha, Dmitri Melikhov, Hagop Sazdjian
- Abstract
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.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), Anuchin Research Institute and Museum of Anthropology, Universität Wien, Centre National De La Recherche Scientifique (CNRS)
- Journal
- EPJ Web of Conferences
- Volume
- 182
- No. of pages
- 8
- ISSN
- 2101-6275
- DOI
- https://doi.org/10.1051/epjconf/201818202111
- Publication date
- 08-2018
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103034 Particle physics
- ASJC Scopus subject areas
- Physics and Astronomy(all)
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/narrowwidth-tetraquarks-in-largenc-qcd(9e1f3612-1bbe-45bc-b120-75907a3048f1).html