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24 April 2024

» pubmed » pmid12731908

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Improved direct measurement of the parity-violation parameter Ab using a mass tag and momentum-weighted track charge
Kenji Abe ; Koya 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 S Damerell ; M Daoudi ; N de Groot ; R de Sangro ; D N Dong ; M Doser ; R Dubois ; I Erofeeva ; V Eschenburg ; S Fahey ; D Falciai ; J P Fernandez ; K Flood ; R Frey ; E L Hart ; K Hasuko ; S S Hertzbach ; M E Huffer ; X Huynh ; M Iwasaki ; D J Jackson ; P Jacques ; J A Jaros ; Z Y Jiang ; A S Johnson ; J R Johnson ; R Kajikawa ; M Kalelkar ; H J Kang ; R R Kofler ; R S Kroeger ; M Langston ; D W G Leith ; V Lia ; C Lin ; G Mancinelli ; S Manly ; G Mantovani ; T W Markiewicz ; T Maruyama ; A K McKemey ; R Messner ; K C Moffeit ; T B Moore ; M Morii ; D Muller ; V Murzin ; S Narita ; U Nauenberg ; H Neal ; G Nesom ; N Oishi ; D Onoprienko ; L S Osborne ; R S Panvini ; C H Park ; I Peruzzi ; M Piccolo ; L Piemontese ; R J Plano ; R Prepost ; C Y Prescott ; B N Ratcliff ; J Reidy ; P L Reinertsen ; L S Rochester ; P C Rowson ; J J Russell ; O H Saxton ; T Schalk ; B A Schumm ; J Schwiening ; V V Serbo ; G Shapiro ; N B Sinev ; J A Snyder ; H Staengle ; A Stahl ; P Stamer ; H Steiner ; D Su ; F Suekane ; A Sugiyama ; S Suzuki ; M Swartz ; F E Taylor ; J Thom ; E Torrence ; T Usher ; J Va’vra ; R Verdier ; D L Wagner ; A P Waite ; S Walston ; A W Weidemann ; E R Weiss ; J S Whitaker ; S H Williams ; S Willocq ; R J Wilson ; W J Wisniewski ; J L Wittlin ; M Woods ; T R Wright ; R K Yamamoto ; J Yashima ; S J Yellin ; C C Young ; H Yuta ; ;
Date:	11 Apr 2003
Journal:	Phys Rev Lett, 90 (14), 141804
Abstract:	We present an improved direct measurement of the parity-violation parameter A(b) in the Z boson-b-quark coupling using a self-calibrating track-charge technique applied to a sample enriched in Z-->bb events via the topological reconstruction of the B hadron mass. Manipulation of the Stanford Linear Collider electron-beam polarization permits the measurement of A(b) to be made independently of other Z-pole coupling parameters. From the 1996-1998 sample of 400,000 hadronic Z decays, produced with an average beam polarization of 73.4%, we find A(b)=0.906+/-0.022(stat)+/-0.023(syst).
Source:	PubMed, pmid12731908
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