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Measurements of {Mathematical expression} mixing, {Mathematical expression} and semileptonic branching ratios for b-flavoured hadrons in hadronic Z0 decays

  • R. Akers
  • , G. Alexander
  • , J. Allison
  • , K. J. Anderson
  • , S. Arcelli
  • , A. Astbury
  • , D. Axen
  • , G. Azuelos
  • , J. T.M. Baines
  • , A. H. Ball
  • , J. Banks
  • , R. J. Barlow
  • , S. Barnett
  • , R. Bartoldus
  • , J. R. Batley
  • , G. Beaudoin
  • , A. Beck
  • , G. A. Beck
  • , J. Becker
  • , C. Beeston
  • T. Behnke, K. W. Bell, G. Bella, P. Bentkowski, P. Berlich, S. Bethke, O. Biebel, I. J. Bloodworth, P. Bock, B. Boden, H. M. Bosch, M. Boutemeur, H. Breuker, P. Bright-Thomas, R. M. Brown, A. Buijs, H. J. Burckhart, C. Burgard, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, S. L. Chu, P. E.L. Clarke, J. C. Clayton, I. Cohen, J. E. Conboy, M. Cooper, M. Coupland, M. Cuffiani, S. Dado, G. M. Dallavalle, S. De Jong, L. A. del Pozo, H. Deng, A. Dieckmann, M. Dittmar, M. S. Dixit, E. do Couto e Silva, J. E. Duboscq, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. J.P. Dumas, P. A. Elcombe, P. G. Estabrooks, E. Etzion, H. G. Evans, F. Fabbri, B. Fabbro, M. Fierro, M. Fincke-Keeler, H. M. Fischer, D. G. Fong, M. Foucher, A. Gaidot, J. W. Gary, J. Gascon, N. I. Geddes, C. Geich-Gimbel, S. W. Gensler, F. X. Gentit, G. Giacomelli, R. Giacomelli, V. Gibson, W. R. Gibson, J. D. Gillies, J. Goldberg, D. M. Gingrich, M. J. Goodrick, W. Gorn, C. Grandi, F. C. Grant, J. Hagemann, G. G. Hanson, M. Hansroul, C. K. Hargrove, P. F. Harrison, J. Hart, P. M. Hattersley, M. Hauschild, C. M. Hawkes, E. Heflin, R. J. Hemingway, G. Herten, R. D. Heuer, J. C. Hill, S. J. Hillier, T. Hilse, D. A. Hinshaw, J. D. Hobbs, P. R. Hobson, D. Hochman, R. J. Homer, A. K. Honma, R. E. Hughes-Jones, R. Humbert, P. Igo-Kemenes, H. Ihssen, D. C. Imrie, A. C. Janissen, A. Jawahery, P. W. Jeffreys, H. Jeremie, M. Jimack, M. Jones, R. W.L. Jones, P. Jovanovic, C. Jui, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, J. King, S. Kluth, T. Kobayashi, D. S. Koetke, T. P. Kokott, S. Komamiya, L. Köpke, J. F. Kral, R. Kowalewski, J. von Krogh, J. Kroll, P. Kyberd, G. D. Lafferty, H. Lafoux, R. Lahmann, F. Lamarche, J. Lauber, J. G. Layter, P. Leblanc, A. M. Lee, E. Lefebvre, M. H. Lehto, D. Lellouch, C. Leroy, J. Letts, S. Levegrün, L. Levinson, S. L. Lloyd, F. K. Loebinger, J. M. Lorah, B. Lorazo, M. J. Losty, X. C. Lou, J. Ludwig, A. Luig, M. Mannelli, S. Marcellini, C. Markus, A. J. Martin, J. P. Martin, T. Mashimo, P. Mättig, U. Maur, J. McKenna, T. J. McMahon, J. R. McNutt, F. Meijers, D. Menszner, F. S. Merritt, H. Mes, A. Michelini, R. P. Middleton, G. Mikenberg, J. Mildenberger, D. J. Miller, R. Mir, W. Mohr, C. Moisan, A. Montanari, T. Mori, M. Morii, U. Müller, B. Nellen, H. H. Nguyen, S. W. O'Neale, F. G. Oakham, F. Odorici, H. O. Ogren, C. J. Oram, M. J. Oreglia, S. Orito, J. P. Pansart, B. Panzer-Steindel, P. Paschievici, G. N. Patrick, N. Paz-Jaoshvili, M. J. Pearce, P. Pfister, J. E. Pilcher, J. Pinfold, D. Pitman, D. E. Plane, P. Poffenberger, B. Poli, T. W. Pritchard, H. Przysiezniak, G. Quast, M. W. Redmond, D. L. Rees, G. E. Richards, M. Rison, S. A. Robins, D. Robinson, A. Rollnik, J. M. Roney, E. Ros, S. Rossberg, A. M. Rossi, M. Rosvick, P. Routenburg, K. Runge, O. Runolfsson, D. R. Rust, M. Sasaki, C. Sbarra, A. D. Schaile, O. Schaile, W. Schappert, F. Scharf, P. Scharff-Hansen, P. Schenk, B. Schmitt, H. von der Schmitt, M. Schröder, C. Schwick, J. Schwiening, W. G. Scott, M. Settles, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Skillman, A. Skuja, A. M. Smith, T. J. Smith, G. A. Snow, R. Sobie, R. W. Springer, M. Sproston, A. Stahl, C. Stegmann, K. Stephens, J. Steuerer, R. Ströhmer, D. Strom, H. Takeda, T. Takeshita, S. Tarem, M. Tecchio, P. Teixeira-Dias, N. Tesch, M. A. Thomson, E. Torrente-Lujan, S. Towers, G. Transtromer, N. J. Tresilian, T. Tsukamoto, M. F. Turner, D. Van den plas, R. Van Kooten, G. J. VanDalen, G. Vasseur, C. J. Virtue, A. Wagner, D. L. Wagner, C. Wahl, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, M. Weber, P. Weber, P. S. Wells, N. Wermes, M. A. Whalley, B. Wilkens, G. W. Wilson, J. A. Wilson, V. H. Winterer, T. Wlodek, G. Wolf, S. Wotton, T. R. Wyatt, R. Yaari, A. Yeaman, G. Yekutieli, M. Yurko, W. Zeuner, G. T. Zorn
  • University of Manchester
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  • University of Victoria BC
  • University of British Columbia
  • University of Montreal
  • University of Maryland, College Park
  • University of Bonn
  • University of Cambridge
  • Queen Mary University of London
  • University of Freiburg
  • University of Hamburg
  • STFC Rutherford Appleton Laboratory (RAL)
  • Heidelberg University 
  • University of Birmingham
  • CERN
  • Brunel University London
  • Carleton University
  • University of California at Riverside
  • University College London
  • Technion-Israel Institute of Technology
  • Birkbeck University of London
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  • Weizmann Institute of Science
  • CEA Saclay
  • University of Alberta
  • The University of Tokyo
  • Kobe University
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Research output: Contribution to journalArticlepeer-review

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Abstract

From a sample of about 450 000 hadronic Z0 decays, measurements of the average {Mathematical expression} mixing parameter, χ, the branching fraction of Z0 bosons into hadrons containing bottom quarks, {Mathematical expression}, the average semileptonic branching ratios for such hadrons, B(b→l) and B(b→c→l), and the mean scaled energy of these hadrons, 〈xE〉, are presented. The measurements were obtained using a simultaneous fit to single-lepton and dilepton events collected with the OPAL detector at LEP, including both electrons and muons. The results are[Figure not available: see fulltext.] where the errors are statistical and systematic, respectively, in each case. The result for B)b→c→l) excludes decays of the type b→→ℓ.

Original languageEnglish
Pages (from-to)199-216
Number of pages18
JournalEuropean Physical Journal C
Volume60
Issue number2
DOIs
StatePublished - Jun 1993

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