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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)
2015
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号75期号:6页码:293
文章类型Article
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.
学科领域Physics
DOI10.1140/epjc/s10052-015-3528-0
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000356969300001
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228394
专题理论物理室
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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.
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