Tetraquarks, hadronic molecules, meson-meson scattering, and disconnected contributions in lattice QCD
نویسندگان
چکیده
Feng-Kun Guo,* Liuming Liu, Ulf-G. Meißner, and Ping Wang Helmholtz-Institut für Strahlenund Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany Institut für Kernphysik, Institute for Advanced Simulation, and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China (Received 14 August 2013; published 24 October 2013)
منابع مشابه
Tetraquark and two-meson states at large \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$N_{\mathrm {c}}$$\end{document}Nc
Considering four-point correlation functions of color-singlet quark bilinears, we investigate, in the largeNc limit of QCD, the subleading diagrams that involve, in the s-channel of meson–meson scattering amplitudes, two-quark–two-antiquark intermediate states. The latter contribute, together with gluon exchanges, to the formation, at the hadronic level, of two-meson and tetraquark intermediate...
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