Strong couplings of heavy mesons to a light vector meson in QCD

Autor:	Zuo-Hong Li, Zhen-Hong Dai, Jin-Zuo Sun, Tao Huang
Rok vydání:	2002
Předmět:	Quantum chromodynamics Physics Semileptonic decay Nuclear and High Energy Physics Particle physics Meson Hadron FOS: Physical sciences Elementary particle High Energy Physics - Phenomenology Particle decay High Energy Physics - Phenomenology (hep-ph) B meson Vector meson
Zdroj:	Physical Review D. 65
ISSN:	1089-4918 0556-2821
DOI:	10.1103/physrevd.65.076005
Popis:	We make a detailed analysis of the $BB\rho(DD\rho)$ and $B^*B\rho(D^{*}D\rho)$ strong couplings $g_{BB\rho}(g_{DD\rho})$ and $g_{B^*B\rho}(g_{D^{*}D\rho})$ using QCD light cone sum rules(LCSR). The existing some negligence is pointed out in the previous LCSR calculation on $g_{B^*B\rho} (g_{D^{\ast}D\rho}$) and an updated estimate is presented. Our findings can be used to understand the behavior of the $B,D \to \rho$ semileptonic form factors at large momentum transitions. Comment: 15 pages, latex, 2 figures, version appearing in PRD, typos corrected
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4597d1bdad51d57521787cc5f049bc5c https://doi.org/10.1103/physrevd.65.076005 Zobrazit plný text záznamu