Chinese Physics C > 2011, Vol. 35 > Issue(6): 519-524 DOI: 10.1088/1674-1137/35/6/001

D⁺→ η^(')l⁺ν_lsemileptonic decays in light-cone sum rules

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We calculate the D → η transition form factor in light-cone sum rules by taking improved current correlators to avoid the pollution from the twist-3 wave function. We get consistent results of the D ⁺→ η ^(')l ⁺ν _ldecays with the experimental data. By comparing the difference between the results of the branching ratios of D ⁺→ η ^(')l ⁺ν _lfrom a two-pole parameterization model and from a BZ parameterization model, we find that the two-pole model and the BZ model are comparably believable. One way is supposed for the determination of the η-η' mixing angle from the dependence of the branching ratios of D ⁺→ η ^(')l ⁺ν _ldecays on the η-η' mixing angle.

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LI Jing-Wu, XUE Dan-Qing, XU Qing-Qiang and WU Xiang-Yao. D ⁺→ η ^(')l ⁺ν _lsemileptonic decays in light-cone sum rules[J]. Chinese Physics C, 2011, 35(6): 519-524. doi: 10.1088/1674-1137/35/6/001

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Received: 2010-09-10
Revised: 2010-11-19

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

D⁺→ η^(')l⁺ν_lsemileptonic decays in light-cone sum rules

Received Date:2010-09-10

Accepted Date:2010-11-19

Available Online:2011-06-05

Abstract:We calculate the D → η transition form factor in light-cone sum rules by taking improved current correlators to avoid the pollution from the twist-3 wave function. We get consistent results of the D⁺→ η^(')l⁺ν_ldecays with the experimental data. By comparing the difference between the results of the branching ratios of D⁺→ η^(')l⁺ν_lfrom a two-pole parameterization model and from a BZ parameterization model, we find that the two-pole model and the BZ model are comparably believable. One way is supposed for the determination of the η-η' mixing angle from the dependence of the branching ratios of D⁺→ η^(')l⁺ν_ldecays on the η-η' mixing angle.

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D⁺→ η^(')l⁺ν_lsemileptonic decays in light-cone sum rules

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