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arXiv · 1307.2797

Light-Cone Sum Rules for the $D_{(s)}\rightarrow η^{(\prime)} l ν_l$ Form Factor

N. Offen·F. A. Porkert·A. Schafer
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Abstract

We present an improved light-cone sum rule analysis of the decay form factors of $D$ and $D_s$ into $η$ and $η^{\prime}$ and argue that these decays offer a very promissing possibility to determine the leading Fock-state gluonic contribution of the $η'$ at future experimental facilities as FAIR or Super-KEKB. We also give the corresponding branching ratios for B decays.

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N. Offen, F. A. Porkert, A. Schafer. 2013-07-14. Light-Cone Sum Rules for the $D_{(s)}\rightarrow η^{(\prime)} l ν_l$ Form Factor. https://doi.org/10.1103/physrevd.88.034023

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