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Measurement of electroweak parameters from hadronic and leptonic decays of the $Z^0$

The L3 collaboration
Z.Phys.C 51 (1991) 179-204, 1991.

Abstract (data abstract)
CERN-LEP. L3 Collaboration. Results of 1990 running for e+ e- --& gt; hadrons and lepton pairs. Data represent a factor two on previous L3 statistics and represent 115000 hadronic and 10000 leptonic Z0 decays. Data are given for cross sections and forward-backward asymmetries. A simultaneous fit to all the cross section data gives the mass(Z0) = 91.181 +- 0.010 +- 0.02(LEP) GeV and width 2501 +- 17 MeV. The data indicate the number of light neutrino species as 3.05 +- 0.10. Fits to asymmetries give values for vector and axial-vector neutral current coupling constants. The top quark mass is determined to be 193 +52,-69 +-16(Higgs) GeV and a value for the weak mixing angle is determined.

  • Table 1

    Data from T 2

    10.17182/hepdata.14940.v1/t1

    Additional systematic uncertainty of 0.4 pct.

  • Table 2

    Data from T 3

    10.17182/hepdata.14940.v1/t2

    Acceptance corrected cross section for cos(theta)<0.8 and for extrapolation to full solid angle. Additional systematic uncertainty of 0.8 pct.

  • Table 3

    Data from T 5

    10.17182/hepdata.14940.v1/t3

    Acceptance corrected cross section for cos(theta)<0.7 and for extrapolation to full solid angle. Additional systematic uncertainty of 2.1 pct.

  • Table 4

    Data from T 4

    10.17182/hepdata.14940.v1/t4

    Asymmetry determined from the number of events in the forward and backward hemisphere. Estimated systematic error is 0.005.

  • Table 5

    Data from T 4

    10.17182/hepdata.14940.v1/t5

    Asymmetry determined using the maximum likelihood method. Estimated systematic error is 0.005.

  • Table 6

    Data from T 6

    10.17182/hepdata.14940.v1/t6

    Asymmetry determined from the number of events in the forward and backward hemisphere. Estimated systematic error is <0.01.

  • Table 7

    Data from T 6

    10.17182/hepdata.14940.v1/t7

    Asymmetry determined using the maximum likelihood method. Estimated systematic error is <0.01.

  • Table 8

    Data from T 6

    10.17182/hepdata.14940.v1/t8

    Asymmetry from a subsample of events with a muon decay of the tau.

  • Table 9

    Data from T 7

    10.17182/hepdata.14940.v1/t9

    Measured cross section. In addition to the theta range there is also the restriction that the acollinearity angle is <...

  • Table 10

    Data from T 7

    10.17182/hepdata.14940.v1/t10

    Cross section for the GCR selection which has the additional restriction of acollinearity angle < 5 degrees, E(gamma) > 3.8...

  • Table 11

    Data from T 8

    10.17182/hepdata.14940.v1/t11

    Asymmetry determined from number of events in forward and backward hemispheres not extrapolated to full solid angle. Additional systematic uncertainty...

  • Table 12

    Data from T 10

    10.17182/hepdata.14940.v1/t12

    Cross section after subtraction of the t-channel and interference contributions. Corrected cross section for theta 44 to 136 degrees and...

  • Table 13

    Data from T 10

    10.17182/hepdata.14940.v1/t13

    Cross section after subtraction of the t-channel and interference contributions. Extrapolation to the full solid angle. Additional systematic uncertainty is...

  • Table 14

    Data from T 10

    10.17182/hepdata.14940.v1/t14

    Forward-backward asymmetry after subtraction of the t-channel and interference contributions. Angular range is 44 to 136 degrees and acollinearity is...

  • Table 15

    Data from P 32(C=PREPRINT)

    10.17182/hepdata.14940.v1/t15

    No description provided.

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