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29 March 2024
 
  » pubmed » pmid11955189

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Improved direct measurement of A(b) and A(c) at the Z(0) pole using a lepton tag
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 15 Apr 2002
Journal Phys Rev Lett, 88 (15), 151801
AbstractThe parity violation parameters A(b) and A(c) of the Zb(b) and Zc(c) couplings have been measured directly, using the polar angle dependence of the polarized cross sections at the Z(0) pole. Bottom and charmed hadrons were tagged via their semileptonic decays. Both the electron and muon analyses take advantage of new multivariate techniques to increase the analyzing power. Based on the 1993-1998 SLD sample of 550,000 Z(0) decays produced with highly polarized electron beams, we measure A(b) = 0.919+/-0.030(stat)+/-0.024(syst), and A(c) = 0.583+/-0.055(stat)+/-0.055(syst).
Source PubMed, pmid11955189
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