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arXiv · hep-ph/0308259

Form Factors and semileptonic decay of $D_s^+\to ϕ\bar{\ell}ν$ from QCD sum rule

Dong-Sheng Du·Jing-Wu Li·Mao-Zhi Yang
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Abstract

We calculate $D_s^+\to ϕ$ transition form factors $V$, $A_0$, $A_1$ and $A_2$, and study semileptonic decay of $D_s^+\to ϕ\bar{\ell}ν$ based on QCD sum rule method. We compare our results of the ratios of $V(0)/A_1(0)$, $A_2(0)/A_1(0)$, $Γ_L/Γ_T$, and the total decay branching ratio of $D_s^+\to ϕ\bar{\ell}ν$ with experimental data, and find that they are consistent.

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Dong-Sheng Du, Jing-Wu Li, Mao-Zhi Yang. 2004-09-01. Form Factors and semileptonic decay of $D_s^+\to ϕ\bar{\ell}ν$ from QCD sum rule. https://doi.org/10.1140/epjc%2Fs2004-01979-9

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