Measurement of the charged multiplicity of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">Z</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>→<i>bb</i>¯ events
Measurement of the charged multiplicity of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">Z</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>→<i>bb</i>¯ events
Using an impact parameter tag to select an enriched sample of ${\mathit{Z}}^{0}$\ensuremath{\rightarrow}bb\ifmmode\bar\else\textasciimacron\fi{} events, we have measured the difference between the average charged multiplicity of ${\mathit{Z}}^{0}$\ensuremath{\rightarrow}bb\ifmmode\bar\else\textasciimacron\fi{} and ${\mathit{Z}}^{0}$\ensuremath{\rightarrow} hadrons to be n${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{\mathit{b}}$-n${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{\mathrm{had}}$=2.24\ifmmode\pm\else\textpm\fi{}0.30 ( stat )\ifmmode\pm\else\textpm\fi{}0.33 ( syst ) tracks per event. From this, we have derived n${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{\mathit{b}}$-n${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}_{\mathit{u}\mathit{d}\mathit{s}}$=3.31\ifmmode\pm\else\textpm\fi{}0.41\ifmmode\pm\else\textpm\fi{}0.79. Comparing this measurement with …