Author/Authors :
TOPAZ Collaboration، نويسنده , , K. Miyabayashi، نويسنده , , José I. Adachi and Anthony P. Peirce ، نويسنده , , K. Fujii، نويسنده , , J. Fujimoto، نويسنده , , A. Miyamoto، نويسنده ,
Abstract :
The total hadronic cross section in e+e− annihilation was measured at s=5.77 GeV to be σh = 143.6 ± 1.5 (stat) ± 3.5 (sys) pb with only the QED corrections. The measurement was based on data corresponding to an integrated luminosity of 90.8 pb−1 accumulated by the TOPAZ detector at TRISTAN. Our data point put stringent constraints on the size of the γ-Z0 interference and the Z0 mass. Combining our data with the OPAL data at LEP, we obtained the coefficient of the interference and the Z0 mass to be Jhad = 0.10 ± 0.26 and Mz = 91.151 ± 0.008 GeV, respectively, in a model-independent analysis.
