Disconnected contributions to D-meson semi-leptonic decay form factors
Abstract
We calculate the disconnected contribution to the form factor for the semileptonic decay of a D-meson into a final state, containing a flavor singlet eta meson. We use QCDSF nf=2+1 configurations at the flavor symmetric point mu=md=ms and the partially quenched approximation for the relativistic charm quark. Several acceleration and noise reduction techniques for the stochastic estimation of the disconnected loop are tested.
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