LEP precision electroweak measurements from the Z{sup 0} resonance

Conference · Wed Jan 01 04:00:00 EST 1997

OSTI ID:542797

Strom, D ^[1]

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1. Univ. of Oregon, Eugene, OR (United States)

Preliminary electroweak measurements from the LEP Collaboration from data taken at the Z{sup 0} resonance are presented. Most of the results presented are based on a total data sample of 12 x 10{sup 6} recorded Z{sup 0} events which included data from the 1993 and 1994 LEP runs. The Z{sup 0} resonance parameters, including hadronic and leptonic cross sections and asymmetries, {tau} polarization and its asymmetry, and heavy-quark asymmetries and partial widths, are evaluated and confronted with the predictions of the Standard Model. This comparison incorporates the constraints provided by the recent determination of the top-quark mass at the Tevatron. The Z{sup 0} resonance parameters are found to be in good agreement with the Standard Model prediction using the Tevatron top-quark mass, with the exception of the partial widths for Z{sup 0} decays to pairs of b and c quarks.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• OSTI ID: 542797
• Report Number(s): SLAC-R--494; CONF-9507258--; ON: DE97006538
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
LEP STORAGE RINGS
POLARIZATION-ASYMMETRY RATIO
RADIATIVE CORRECTIONS
REST MASS
STANDARD MODEL
T QUARKS
Z NEUTRAL BOSONS