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Lattice HQET Calculation of the Isgur-Wise Function by Christensen, Joseph; Draper, Terrence; McNeile, Craig is a scholarly article available to read on EtoBox.

What is Lattice HQET Calculation of the Isgur-Wise Function about?

We calculate the Isgur-Wise function on the lattice, simulating the light quark with the Wilson action and the heavy quark with a direct lattice implementation of the heavy-quark effective theory. Improved smearing functions produced by a variational technique, MOST, are used to reduce the statistical errors and to minimize excited-state contamination of the ground-state signal. Calculating the required matching factors, we obtain $\xi'(1)=-0.64(13)$ for the slope of the Isgur-Wise function in continuum-HQET in the $\barMS$ scheme at a scale of $4.0 $GeV.

Author

Christensen, Joseph; Draper, Terrence; McNeile, Craig

Published

1997

Language

EN