Polarized Bhabha Scattering and a Precision Measurement of the Electron Neutral Current Couplings

10 April 1995

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 74 (15) , 2880-2884
https://doi.org/10.1103/physrevlett.74.2880

Abstract

Bhabha scattering with polarized electrons at the

Z^{0}

resonance has been measured with the SLD experiment at the SLAC Linear Collider. The first measurement of the left-right asymmetry in Bhabha scattering is presented, yielding the effective weak mixing angle of

{sin}^{2} θ_{W}^{eff} = 0.2245 \pm 0.0049 \pm 0.0010

. The effective electron couplings to the

Z^{0}

are extracted from a combined analysis of polarized Bhabha scattering and the left-right asymmetry previously published:

υ_{e} = - 0.0414 \pm 0.0020

and

a_{e} = - 0.4977 \pm 0.0045

Keywords

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This publication has 15 references indexed in Scilit:

Precise Measurement of the Left-Right Cross Section Asymmetry in $Z$ Boson Production by $e^{+} e^{-}$ Collisions
Physical Review Letters, 1994
The lead-liquid argon sampling calorimeter of the SLD detector
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1993
First results from the SLD silicon calorimeters
IEEE Transactions on Nuclear Science, 1992
A luminosity monitor for the Mark II detector at the SLC
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
Bhabha scattering at high energy
Il Nuovo Cimento A (1971-1996), 1992
QED multiphoton corrections to Bhabha scattering at low angels. Monte Carlo solution
Physics Letters B, 1991
The fast simulation of electromagnetic and hadronic showers
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1990
Multiphoton Monte Carlo event generator for Bhabha scattering at small angles
Physical Review D, 1989
Radiative corrections to Bhabha scattering at high energies
Nuclear Physics B, 1988
e+e- physics at petra—the first five years
Physics Reports, 1984