Lattice calculation of D_s to η^((prime)) semi-leptonic decay form factors
classification
✦ hep-lat
hep-exhep-ph
keywords
decayfactorsformlatticedisconnectedloopssemi-leptoniccalculation
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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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