Autor:	Herbert R. Petry, Matthias Koll, Bernard Metsch, Ralf Ricken, D. Merten
Rok vydání:	2002
Předmět:	Quark Physics Nuclear and High Energy Physics Particle physics Instanton Meson High Energy Physics::Lattice Nuclear Theory High Energy Physics::Phenomenology Quark model Observable Factorization High Energy Physics::Experiment B meson Covariant transformation Nuclear Experiment
Zdroj:	The European Physical Journal A. 13:477-491
ISSN:	1434-6001
DOI:	10.1007/s10050-002-8778-1
Popis:	In this paper we investigate weak decays of heavy mesons in the framework of a covariant quark model, which is based on the Bethe-Salpeter equation in instantaneous approximation. Apart from a phenomenological confinement potential, a residual interaction induced by instantons is adopted. Masses and many decay observables of light mesons have already been described successfully in this model. An appropiate extension allows a unified description of light and heavy systems. Using a set of parameters which are fixed by the mass spectra, we evaluate the form factors of semileptonic decays of charmed and bottom mesons. In the heavy quark limit these can be reduced to the Isgur-Wise function, which is calculated. Finally the form factors are used to determine the non-leptonic decay rates of B mesons in the factorization approximation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::563885a5deee21ab7f355101b72de6d5 https://doi.org/10.1007/s10050-002-8778-1 Zobrazit plný text záznamu Full text from SpringerLink