Strong D* -> D pi and B* -> B pi couplings

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	*Strong D -> D pi and B* -> B pi couplings**
	El-Bennich, B ; Ivanov, MA ; Roberts, CD
刊名	PHYSICAL REVIEW C
	2011
卷号	83 期号:2 页码:25205
关键词	ELECTROMAGNETIC FORM-FACTORS DYSON-SCHWINGER EQUATIONS HADRON PHYSICS HEAVY LIGHT QCD
ISSN号	0556-2813
通讯作者	El-Bennich, B (reprint author), Univ Cruzeiro Sul, Lab Fis Teor & Computacao Cient, Rua Galvao Bueno 868, BR-01506000 Sao Paulo, Brazil.
英文摘要	We compute g(DD pi) and g(BB pi) using a framework in which all elements are constrained by Dyson-Schwinger equation studies of QCD and therefore incorporates a consistent, direct, and simultaneous description of light and heavy quarks and the states they may constitute. We link these couplings with the heavy-light-meson leptonic decay constants and thereby obtain g(DD pi) = 15.9(-1.0)(+2.1) and g(BB pi) = 30.0(-1.4)(+3.2). From the latter, we infer (g) over cap (B) = 0.37(-0.02)(+0.04). A comparison between g(DD pi) and g(BB pi) indicates that when the c quark is a system's heaviest constituent, Lambda(QCD)/m(c)-corrections are not under good control.
学科主题	Physics
收录类别	SCI
资助信息	Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [2009/51296-1, 2010/05772-3]; Russian Fund for Basic Research [10-02-00368-a]; US Department of Energy, Office of Nuclear Physics [DE-AC02-06CH11357]
原文出处	http://dx.doi.org/10.1103/PhysRevC.83.025205
语种	英语
WOS记录号	WOS:000287367900007
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14410]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	El-Bennich, B,Ivanov, MA,Roberts, CD. Strong D* -> D pi and B* -> B pi couplings[J]. PHYSICAL REVIEW C,2011,83(2):25205.
APA	El-Bennich, B,Ivanov, MA,&Roberts, CD.(2011).Strong D* -> D pi and B* -> B pi couplings.PHYSICAL REVIEW C,83(2),25205.
MLA	El-Bennich, B,et al."Strong D* -> D pi and B* -> B pi couplings".PHYSICAL REVIEW C 83.2(2011):25205.