25-29 September 2017
Salamanca, Spain
Europe/Zurich timezone

Narrow Exotic Tetraquarks in large-Nc QCD

26 Sep 2017, 19:00
Auditorium Hall

Auditorium Hall

Poster QCD and hadron structure Poster session


Dmitri Melikhov (HEPHY)


We study four-point functions of bilinear quark currents in QCD at large-Nc and obtain conditions for the existence of narrow tetraquark states. We then discuss three-point functions involving one tetraquark interpolating current and two biblinear quark currents and obtain the large-Nc behavior of the tetraquark decay constants. Finally, we discuss the implications of these results for the analyses of tetraquark mesons within the method of QCD sum rules.

Primary authors

Dmitri Melikhov (HEPHY) Wolfgang Lucha (Austrian Academy of Sciences) Hagop Sazdjian (University Paris-Sud)

Presentation Materials