Masses and OZI-Allowed Decay Widths of ϒ States in a Coupled Channel Model

Autor:	Nozomi Yabusaki, Kiyoshi Katō, Yasuo Matsuda, Masanobu Hirano, Motoki Sakai
Rok vydání:	2001
Předmět:	Nuclear physics Physics Quark symbols.namesake Particle physics Physics and Astronomy (miscellaneous) Nuclear Theory High Energy Physics::Phenomenology symbols High Energy Physics::Experiment Nuclear Experiment Hamiltonian (quantum mechanics) Channel models
Zdroj:	Progress of Theoretical Physics. 106:389-400
ISSN:	1347-4081 0033-068X
DOI:	10.1143/ptp.106.389
Popis:	A coupled channel model based on an effective quark interaction Hamiltonian and an OBE potential for meson-antimeson interactions is applied to the analysis of both masses and strong decay widths of Y states. It turns out to be quite successful, following the previous successful result for the ψ states. It is concluded that the effective quark interaction Hamiltonian fully explains dynamics not only for mass splitting but also for the Okubo- Zweig-Iizuka (OZI)allowed decay of heavy quarkonia. The most conspicuous prediction of the present model is the mass, ∼10.670 GeV, and the width, ∼20 MeV, of a yet unobserved Y (3D)resonance, which may correspond to the observed structure of the e + e − cross-section R seen in the energy range 10.6-10.8 GeV.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b196975929d2b52b71ad9e97a7f1100d https://doi.org/10.1143/ptp.106.389 Zobrazit plný text záznamu