Lattice calculation of $D_s$ to $\eta^{(\prime)}$ semi-leptonic decay form factors

Issaku Kanamori; Johannes Najjar; Sara Collins

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Lattice calculation of $D_s$ to $\eta^{(\prime)}$ semi-leptonic decay form factors

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arxiv 1311.7393 v1 pith:6F22CKPI submitted 2013-11-28 hep-lat hep-exhep-ph

Sara Collins , Issaku Kanamori , Johannes Najjar This is my paper

classification hep-lathep-exhep-ph

keywords decayfactorsformlatticedisconnectedloopssemi-leptoniccalculation

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abstract

We report lattice results of $D_s$ meson semi-leptonic decay form factors to $\eta$ and $\eta'$ mesons. This decay process contains disconnected fermion loops, which are challenging in lattice calculations. Our result shows that the disconnected loops give significant contributions to the form factors.

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