An Improved Test of the Flavor Independence of Strong Interactions
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چکیده
We present an improved comparison of the strong coupling of the gluon to light (ql = u+d+s), c, and b quarks, determined from multijet rates in avor-tagged samples of hadronic Z decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation among primary qlql, c c, and b b nal states was made on the basis of the reconstructed mass of long-lived heavy-hadron decay vertices, yielding tags with high purity and low bias against 3-jet nal states. We nd: cs= uds s = 1:036 0:043 (stat:) 0:045 (syst:) +0:020 0:018 (theory) and b s= uds s = 1:004 0:018 (stat:) +0:026 0:031 (syst:) +0:018 0:029
منابع مشابه
An Improved Test of the Flavor Independence of Strong
We present an improved comparison of the strong coupling of the gluon to light (ql = u+d+s), c, and b quarks, determined from multijet rates in flavor-tagged samples of hadronic Z0 decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation among primary qlql, cc̄, and bb̄ final states was made on the basis of the reconstructed mass of long-liv...
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