Disconnected contributions to D-meson semi-leptonic decay form factors
High Energy Physics - Lattice
2011-11-22 v1 High Energy Physics - Phenomenology
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 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.
Keywords
Cite
@article{arxiv.1111.4053,
title = {Disconnected contributions to D-meson semi-leptonic decay form factors},
author = {G. S. Bali and S. Collins and R. Horsley and I. Kanamori and Y. Nakamura and D. Pleiter and P. Pérez-Rubio and P. E. L. Rakow and A. Schäfer and G. Schierholz and F. Winter and J. M. Zanotti},
journal= {arXiv preprint arXiv:1111.4053},
year = {2011}
}
Comments
7 pages, talk presented at the XXIX International Symposium on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Valley, Lake Tahoe, California, USA