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

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

2010-11-28

arxiv.org/abs/1011.6046v2

J.Phys.G38:095001,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 Pages, 2 Figure and 4 Tables

Scientific paper

10.1088/0954-3899/38/9/095001

Probing the $\bar ss$ content of the $\eta$ and $\eta'$ mesons and considering mixing between these states as well as gluonic contributions, the form factors responsible for semileptonic $D_s \to (\eta, \eta') l \nu$ 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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