Semileptonic D decay into scalar mesons: a QCD sum rule approach
نویسنده
چکیده
Semileptonic decays of D-mesons into scalar hadronic states are investigated. Two extreme cases are considered: a) the meson decays directly into an uncorrelated scalar state of two two mesons and b) the decay proceeds via resonance formation. QCD sum rules including instanton contributions are used to calculate total and differential decay rates under the two assumptions. PACS Numbers : 12.38.Lg , 13.30.Ce , 14.65.Dw
منابع مشابه
6 Analysis of exclusive B s → D s 0 ( 2317 ) l ν̄ l decay in “ full ” QCD
The transition form factors of the semileptonic decay Bs into scalar Ds0(2317) meson is calculated in the framework of 3–point QCD sum rule. The branching ratio is found to be ∼ 10−3 for the Bs → Ds0(2317)lν̄l (l = e, μ) decay, and ∼ 10−4 for the Bs → Ds0(2317)τ ν̄τ decay, respectively. e-mail: [email protected] permanent address:Institute of Physics,Baku,Azerbaijan e-mail: [email protected]
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