Chinese Physics C > 2011, Vol. 35 > Issue(7): 603-607 DOI: 10.1088/1674-1137/35/7/001

Uncertainty study of D_S^-(D^-)→γlν (l=e,μ) decays determined by wave function

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Wave function is important for determining decay constants f _{D_S^-}and f _D^-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of D _S ^-(D ^-) mesons. The branching ratios are (1.025390—1.706812) × 10 ^-5and (0.953498—1.576725) × 10 ^-6for D _S ^-and D ^-decays, respectively, which are sensitive to the type of wave function.

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HOU Zhao-Yu, GUO Peng and WU Wen-Wang. Uncertainty study of D _S ^-(D ^-)→γlν (l=e,μ) decays determined by wave function[J]. Chinese Physics C, 2011, 35(7): 603-607. doi: 10.1088/1674-1137/35/7/001

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Received: 2010-09-29
Revised: 2010-10-14

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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

Uncertainty study of D_S^-(D^-)→γlν (l=e,μ) decays determined by wave function

Received Date:2010-09-29

Accepted Date:2010-10-14

Available Online:2011-07-05

Abstract:Wave function is important for determining decay constantsf_{D_S^-}andf_D^-. Using the 5 types of D meson wave functions in the heavy quark limit, we studied the uncertainties of radiative pure-leptonic decays of D_S^-(D^-) mesons. The branching ratios are (1.025390—1.706812) × 10^-5and (0.953498—1.576725) × 10^-6for D_S^-and D^-decays, respectively, which are sensitive to the type of wave function.

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Uncertainty study of D_S^-(D^-)→γlν (l=e,μ) decays determined by wave function

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