The B-c -> psi(2S)pi, eta(c)(2S)pi decays in the perturbative QCD approach

	The B-c -> psi(2S)pi, eta(c)(2S)pi decays in the perturbative QCD approach
	Rui, Z; Wang WF(王文飞); Wang, WF; Wang, GX; Song, LH; Lu, CD; Lv CD(吕才典)
刊名	EUROPEAN PHYSICAL JOURNAL C
	2015
卷号	75 期号:6 页码:293
英文摘要	Nonleptonic two-body B-c decays including radially excited psi(2S) or eta(c)(2S) mesons in the final state are studied using the perturbative QCD approach based on k(T) factorization. The charmonium distribution amplitudes are extracted from the n = 2, l = 0 Schrodinger states for the harmonic oscillator potential. Utilizing these distribution amplitudes, we calculate the numerical results of the B-c -> psi(2S), eta(c)(2S) transition form factors and branching fractions of B-c -> psi(2S)pi, eta(c)(2S)pi decays. The ratio between two decay modes B-c -> psi(2S)pi and B-c -> J/psi pi is compatible with the experimental data within uncertainties, which indicates that the harmonic-oscillator wave functions for psi(2S) and eta(c)(2S) work well. It is found that the branching fraction of B-c -> eta(c)(2S)pi, which is dominated by the twist-3 charmonium distribution amplitude, can reach the order of 10(-3). We hope it can be measured soon in the LHCb experiment.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000356969300001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228394]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Rui, Z,Wang WF,Wang, WF,et al. The B-c -> psi(2S)pi, eta(c)(2S)pi decays in the perturbative QCD approach[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(6):293.
APA	Rui, Z.,王文飞.,Wang, WF.,Wang, GX.,Song, LH.,...&吕才典.(2015).The B-c -> psi(2S)pi, eta(c)(2S)pi decays in the perturbative QCD approach.EUROPEAN PHYSICAL JOURNAL C,75(6),293.
MLA	Rui, Z,et al."The B-c -> psi(2S)pi, eta(c)(2S)pi decays in the perturbative QCD approach".EUROPEAN PHYSICAL JOURNAL C 75.6(2015):293.