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Polarized Bhabha scattering and a precision measurement of the electron neutral current couplings

Journal Article · · Physical Review Letters
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Bhabha scattering with polarized electrons at the {ital Z}{sup 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{theta}{sup eff}{sub {ital W}}=0.2245{plus_minus}0.0049{plus_minus}0.0010. The effective electron couplings to the {ital Z}{sup 0} are extracted from a combined analysis of polarized Bhabha scattering and the left-right asymmetry previously published: {upsilon}{sub {ital e}}={minus}0.0414{plus_minus}0.0020 and {ital a}{sub {ital e}}={minus}0.4977{plus_minus}0.0045.
OSTI ID:
46389
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
ASYMMETRY
BHABHA SCATTERING
COUPLING
ELECTRONS
MIXING
NEUTRAL-CURRENT INTERACTIONS
POLARIZED BEAMS
STANDARD MODEL
STANFORD LINEAR COLLIDER
WIDTH
Z NEUTRAL BOSONS