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arXiv · 1011.6046

Exclusive $D_{s} \to (η,η^{\prime}) l ν$ decays in light cone QCD

K. Azizi·R. Khosravi·F. Falahati
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Abstract

Probing the $\bar ss$ content of the $η$ and $η'$ mesons and considering mixing between these states as well as gluonic contributions, the form factors responsible for semileptonic $D_s \to (η, η') l ν$ transitions are calculated via light cone QCD sum rules. Corresponding branching fractions and their ratio for different mixing angles are also obtained. Our results are in a good consistency with experimental data as well as predictions of other nonperturbative approaches.

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K. Azizi, R. Khosravi, F. Falahati. 2011-06-11. Exclusive $D_{s} \to (η,η^{\prime}) l ν$ decays in light cone QCD. https://doi.org/10.1088/0954-3899%2F38%2F9%2F095001

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