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Measurement of the charged multiplicity of events containing bottom hadrons at Ec. m.=91 GeV

  • B. A. Schumm
  • , D. S. Koetke
  • , C. E. Adolphsen
  • , J. P. Alexander
  • , D. Averill
  • , B. C. Barish
  • , T. Barklow
  • , B. A. Barnett
  • , D. Blockus
  • , A. Boyarski
  • , B. Brabson
  • , A. Breakstone
  • , F. Bulos
  • , P. R. Burchat
  • , D. L. Burke
  • , R. J. Cence
  • , J. Chapman
  • , M. Chmeissani
  • , D. Cords
  • , D. P. Coupal
  • P. Dauncey, H. C. DeStaebler, J. M. Dorfan, P. S. Drell, D. C. Drewer, D. Durrett, R. Elia, G. J. Feldman, R. C. Field, W. T. Ford, C. Fordham, R. Frey, D. Fujino, K. K. Gan, E. Gero, G. Gidal, T. Glanzman, G. Goldhaber, J. J.Gomez Cadenas, G. Gratta, G. Hanson, R. Harr, B. Harral, F. A. Harris, K. Hayes, C. Hearty, C. A. Heusch, M. D. Hildreth, T. Himel, D. A. Hinshaw, S. J. Hong, D. Hutchinson, J. Hylen, W. R. Innes, R. G. Jacobsen, J. A. Jaros, C. K. Jung, J. A. Kadyk, C. Kenney, M. King, S. Komamiya, L. A. Kowalski, J. F. Kral, M. Kuhlen, L. Labarga, A. J. Lankford, F. Le Diberder, M. E. Levi, A. M. Litke, X. C. Lou, V. L̈th, J. A. McKenna, J. A.J. Matthews, T. Mattison, K. C. Moffeit, C. T. Munger, W. N. Murray, J. Nash, H. Ogren, K. F. O'Shaughnessy, S. I. Parker, C. Peck, M. L. Perl, M. Petradza, R. Pitthan, F. C. Porter, P. Rankin, F. R. Rouse, D. R. Rust, H. F.W. Sadrozinski, A. S. Schwarz, A. Seiden, J. G. Smith, A. Snyder, E. Soderstrom, D. P. Stoker, R. Stroynowski, M. Swartz, R. Thun, G. H. Trilling, M. Turala, R. Van Kooten, P. Weber, A. J. Weinstein, E. Wicklund, S. R. Wagner, M. Woods, M. Yurko, C. Zaccardelli
  • University of California at Berkeley
  • SLAC National Accelerator Laboratory
  • Indiana University Bloomington
  • California Institute of Technology
  • Johns Hopkins University
  • University of Hawai'i at Mānoa
  • University of California at Santa Cruz
  • University of Michigan, Ann Arbor
  • University of Colorado Boulder

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Using an impact-parameter tag to select an enriched sample of Z0bb» events, we have measured the difference between the average charged multiplicity of bb» and all hadronic Z0 decays to be 2.11.8(stat) 0.6(syst) tracks per event. The resulting total (nonleading) charged multiplicity for Z0 bb» events is 23.1(12.0)1.8 0.6 tracks. A comparison of this nonleading multiplicity to hadronic multiplicity data in the range of 10 to 60 GeV supports the hypothesis of flavor-independent hadronic fragmentation, and yields a measurement of the average energy fraction of bottom hadrons in Z0 decays of xEb=0.620.100.04.

Original languageEnglish
Pages (from-to)453-456
Number of pages4
JournalPhysical Review D
Volume46
Issue number1
DOIs
StatePublished - 1992

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