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29 March 2024
 
  » pubmed » pmid11290027

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Measurement of the relative branching fraction of upsilon(4S) to charged and neutral B-meson pairs
J P Alexander ; R Baker ; C Bebek ; B E Berger ; K Berkelman ; F Blanc ; V Boisvert ; D G Cassel ; M Dickson ; P S Drell ; K M Ecklund ; R Ehrlich ; A D Fol ; P Gaidarev ; L Gibbons ; B Gittelman ; S W Gray ; D L Hartill ; B K Heltsley ; P I Hopman ; C D Jones ; D L Kreinick ; M Lohner ; A Magerkurth ; T O Meyer ; N B Mistry ; E Nordberg ; J R Patterson ; D Peterson ; D Riley ; J G Thayer ; P G Thies ; B Valant-Spaight ; A Warburton ; P Avery ; C Prescott ; A I Rubiera ; J Yelton ; J Zheng ; G Brandenburg ; A Ershov ; Y S Gao ; D Y Kim ; R Wilson ; T E Browder ; Y Li ; J L Rodriguez ; H Yamamoto ; T Bergfeld ; B I Eisenstein ; J Ernst ; G E Gladding ; G D Gollin ; R M Hans ; E Johnson ; I Karliner ; M A Marsh ; M Palmer ; C Plager ; C Sedlack ; M Selen ; J J Thaler ; J Williams ; K W Edwards ; R Janicek ; P M Patel ; A J Sadoff ; R Ammar ; A Bean ; D Besson ; R Davis ; N Kwak ; X Zhao ; S Anderson ; V V Frolov ; Y Kubota ; S J Lee ; R Mahapatra ; J J O’Neill ; R Poling ; T Riehle ; A Smith ; J Urheim ; S Ahmed ; M S Alam ; S B Athar ; L Jian ; L Ling ; A H Mahmood ; M Saleem ; S Timm ; F Wappler ; A Anastassov ; J E Duboscq ; E Eckhart ; K K Gan ; C Gwon ; T Hart ; K Honscheid ; D Hufnagel ; H Kagan ; R Kass ; T K Pedlar ; H Schwarthoff ; J B Thayer ; E von Toerne ; M M Zoeller ; S J Richichi ; H Severini ; P Skubic ; A Undrus ; S Chen ; J Fast ; J W Hinson ; J Lee ; N Menon ; D H Miller ; E I Shibata ; I P Shipsey ; V Pavlunin ; D Cronin-Hennessy ; Y Kwon ; A L Lyon ; E H Thorndike ; C P Jessop ; H Marsiske ; M L Perl ; V Savinov ; D Ugolini ; X Zhou ; T E Coan ; V Fadeyev ; Y Maravin ; I Narsky ; R Stroynowski ; J Ye ; T Wlodek ; M Artuso ; R Ayad ; C Boulahouache ; K Bukin ; E Dambasuren ; S Karamov ; G Majumder ; G C Moneti ; R Mountain ; S Schuh ; T Skwarnicki ; S Stone ; G Viehhauser ; J C Wang ; A Wolf ; J Wu ; S Kopp ; S E Csorna ; I Danko ; K W McLean ; S Márka ; Z Xu ; R Godang ; K Kinoshita ; I C Lai ; S Schrenk ; G Bonvicini ; D Cinabro ; S McGee ; L P Perera ; G J Zhou ; E Lipeles ; M Schmidtler ; A Shapiro ; W M Sun ; A J Weinstein ; F Würthwein ; D E Jaffe ; G Masek ; H P Paar ; E M Potter ; S Prell ; V Sharma ; D M Asner ; A Eppich ; T S Hill ; R J Morrison ; R A Briere ; B H Behrens ; W T Ford ; A Gritsan ; J Roy ; J G Smith ; ;
Date 26 Mar 2001
Journal Phys Rev Lett, 86 (13), 2737-41
AbstractWe analyze 9.7x10(6) B_B pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B-meson pairs produced at the Upsilon(4S) resonance. We measure the rates for B0-->J/psiK((*)0) and B+-->J/psiK((*)+) decays and use the world-average B-meson lifetime ratio to extract the relative widths f(+-) / f(00) = gamma(Upsilon(4S)-->B+B-) / gamma(Upsilon(4S)-->B0 B-0)) = 1.04+/-0.07(stat)+/-0.04(syst). With the assumption that f(+-)+f(00) = 1, we obtain f(00) = 0.49+/-0.02(stat)+/-0.01(syst) and f(+-) = 0.51+/-0.02(stat)+/-0.01(syst). This production ratio and its uncertainty apply to all exclusive B-meson branching fractions measured at the Upsilon(4S) resonance.
Source PubMed, pmid11290027
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