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26 April 2024

» pubmed » pmid10991095

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High-precision measurement of the left-right Z Boson cross-section asymmetry
K Abe ; K Abe ; T Abe ; I Adam ; H Akimoto ; D Aston ; K G Baird ; C Baltay ; H R B ; T L Barklow ; J M Bauer ; G Bellodi ; R Berger ; G Blaylock ; J R Bogart ; G R Bower ; J E Brau ; M Breidenbach ; W M Bugg ; D Burke ; T H Burnett ; P N Burrows ; A Calcaterra ; R Cassell ; A Chou ; H O Cohn ; J A Coller ; M R Convery ; V Cook ; R F Cowan ; G Crawford ; C J Damerell ; M Daoudi ; S Dasu ; N de Groot ; R de Sangro ; D N Dong ; M Doser ; R Dubois ; I Erofeeva ; V Eschenburg ; E Etzion ; S Fahey ; D Falciai ; J P Fernandez ; M J Fero ; K Flood ; R Frey ; E L Hart ;
Date:	26 Jun 2000
Journal:	Phys Rev Lett, 84 (26 Pt 1), 5945-9
Abstract:	We present a measurement of the left-right cross-section asymmetry ( A(LR)) for Z boson production by e(+)e(-) collisions. The measurement includes the final data taken with the SLD detector at the SLAC Linear Collider during the period 1996-1998. Using a sample of 383 487 Z decays collected during the 1996-1998 runs we measure the pole value of the asymmetry, A(0)(LR), to be 0.150 56+/-0.002 39 which is equivalent to an effective weak mixing angle of sin (2)straight theta(eff)(W) = 0.231 07+/-0.000 30. Our result for the complete 1992-1998 data set comprising approximately 537 000 Z decays is sin (2)straight theta(eff)(W) = 0.230 97+/-0.000 27.
Source:	PubMed, pmid10991095
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