Charm Effects in the $\bar{MS}$ Bottom Quark Mass from $��$ Mesons

Authors :: Hoang, A. H.
Manohar, A. V.
Publication Year :: 1999
Publisher :: arXiv, 1999.
Abstract: We study the shift in the $��$ mass due to a non-zero charm quark mass. This shift affects the value of the $\bar{\rm MS}$ $b$-quark mass extracted from the $��$ system by about -20 MeV, due to an incomplete cancellation of terms that are non-analytic in the charm quark mass. The precise size of the shift depends on unknown higher order corrections, and might have a considerable uncertainty if they are large.<br />7 pages, revtex, 2 postscript figures