Heavy pseudoscalar twist-3 distribution amplitudes within QCD theory in background fields

doi:10.1140/epjc/s10052-016-4350-z

	Heavy pseudoscalar twist-3 distribution amplitudes within QCD theory in background fields
	Zhong, T; Huang, T; Fu, HB; Wu, XG; Huang T(黄涛); 黄涛（理）
刊名	EUROPEAN PHYSICAL JOURNAL C
	2016
卷号	76 期号:9
DOI	10.1140/epjc/s10052-016-4350-z
通讯作者	黄涛（理）
英文摘要	In this paper, we study the properties of the twist-3 distribution amplitude (DA) of the heavy pseudoscalars such as eta(c), B-c, and eta(b). New sum rules for the twist-3 DA moments (HP) and (HP) up to sixth order and up to dimension-six condensates are deduced under the framework of the background field theory. Based on the sum rules for the twist-3 DA moments, we construct a new model for the two twist-3 DAs of the heavy pseudoscalar with the help of the Brodsky-Huang-Lepage prescription. Furthermore, we apply them to the B-c -> eta(c) transition form factor (f(+)(Bc ->eta c)(q(2))) within the light-cone sum rules approach, and the results are comparable with other approaches. It has been found that the twist-3 DAs phi(P)(3;eta c) and phi(sigma)(3;eta c) are important for a reliable prediction of f(+)(Bc ->eta c) (q(2)). For example, at the maximum recoil region, we have f(+)(Bc ->eta c) (0) = 0.674 +/- 0.066, in which those two twist-3 terms provide similar to 33 and similar to 22% contributions. Also we calculate the branching ratio of the semi-leptonic decay B-c -> eta(c)l nu as Br(B-c -> eta(c)l nu) = (9.31(-2.01)(+2.27)) x 10(-3).
语种	英语
WOS记录号	WOS:000384339700001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260636]
专题	高能物理研究所_理论物理室
通讯作者	黄涛（理）
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhong, T,Huang, T,Fu, HB,et al. Heavy pseudoscalar twist-3 distribution amplitudes within QCD theory in background fields[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(9).
APA	Zhong, T,Huang, T,Fu, HB,Wu, XG,黄涛,&黄涛.(2016).Heavy pseudoscalar twist-3 distribution amplitudes within QCD theory in background fields.EUROPEAN PHYSICAL JOURNAL C,76(9).
MLA	Zhong, T,et al."Heavy pseudoscalar twist-3 distribution amplitudes within QCD theory in background fields".EUROPEAN PHYSICAL JOURNAL C 76.9(2016).