A TEST OF THE FLAVOR INDEPENDENCE \\[.1in] OF STRONG INTERACTIONS

Details A TEST OF THE FLAVOR INDEPENDENCE \\[.1in] OF STRONG INTERACTIONS A TEST OF THE FLAVOR INDEPENDENCE \\[.1in] OF STRONG INTERACTIONS

1995-01-13

arxiv.org/abs/hep-ex/9501005v4

Phys.Rev.D53:2271-2275,1996

Physics

High Energy Physics

High Energy Physics - Experiment

revtex, 11 pages, 2 figures, replacement fixes problems with the references

Scientific paper

10.1103/PhysRevD.53.2271

We present a comparison of the strong couplings of light ($u$,~$d$,~and~$s$), $c$, and $b$ quarks determined from multijet rates in flavor-tagged samples of hadronic $Z^0$ decays recorded with the SLC Large Detector at the SLAC Linear Collider. Flavor separation on the basis of lifetime and decay multiplicity differences among hadrons containing light, $c$, and $b$ quarks was made using the SLD precision tracking system. We find: $\alpha_s^{uds}/{\alpha_s^{\rm all}} = 0.987 \pm 0.027({\rm stat}) \pm 0.022({\rm syst}) \pm 0.022({\rm theory})$, $\alpha_s^c/{\alpha_s^{\rm all}} = 1.012 \pm 0.104 \pm 0.102 \pm 0.096$, and $\alpha_s^b/{\alpha_s^{\rm all}} = 1.026 \pm 0.041 \pm 0.041\pm 0.030.$

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