Disconnected contributions to D-meson semi-leptonic decay form factors

Details Disconnected contributions to D-meson semi-leptonic decay form factors Disconnected contributions to D-meson semi-leptonic decay form factors

2011-11-17

arxiv.org/abs/1111.4053v1

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, talk presented at the XXIX International Symposium on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Va

Scientific paper

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 n_f=2+1 configurations at the flavor symmetric point m_u=m_d=m_s 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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