Determination of semi-muonic branching ratios and fragmentation functions of heavy quarks in e+e- annihilation at {Mathematical expression}=34.6 GeV

W. Bartel*, L. Becker, R. Felst, D. Haidt, G. Knies, H. Krehbiel, P. Laurikainen, N. Magnussen, R. Meinke, B. Naroska, J. Olsson, D. Schmidt, P. Steffen, T. Greenshaw, J. Hagemann, G. Heinzelmann, H. Kado, C. Kleinwort, M. Kuhlen, A. PetersenR. Ramcke, U. Schneekloth, G. Weber, K. Ambrus, S. Bethke, A. Dieckmann, E. Elsen, J. Heintze, K. H. Hellenbrand, S. Komamiya, J. von Krogh, H. Rieseberg, H. v. d. Schmitt, L. Smolik, J. Spitzer, A. Wagner, M. Zimmer, C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, J. M. Nye, I. W. Walker, J. Allison, R. J. Barlow, J. Chrin, I. P. Duerdoth, F. K. Loebinger, A. A. Macbeth, H. E. Mills, P. G. Murphy, K. Stephens, P. Warming, R. G. Glasser, P. Hill, J. A.J. Skard, S. R. Wagner, G. T. Zorn, S. L. Cartwright, D. Clarke, R. Marshall, R. P. Middleton, K. Kawagoe, T. Mashimo, T. Takeshita, S. Yamada


研究成果: Article査読

34 被引用数 (Scopus)


Muon inclusive multihadronic final states in e+e- annihilation at {Mathematical expression}=34.6 GeV, collected by the JADE detector at PETRA, have been analysed in terms of the semi-muonic branching ratios and fragmentation functions of heavy quarks. Defining the fragmentation variable, ζ, as {Mathematical expression} we find <zc>=(77±3±5)% and <zb>=(86±4±5)%. The corresponding semi-muonic branching ratios are measured to be BR(c→μvμX)=7.8±1.5±2)% and BR (b→μvμX)=(11.7±1.6±1.5)%. Defining ζ as {Mathematical expression} we observe an expected softening effect in the fragmentation due mainly to gluon emission, but find that this definition leads to semi-muonic branching ratiomeasurements which are strongly affected by uncertainties in the fragmentation process and the WCD calculation.

ジャーナルZeitschrift für Physik C Particles and Fields
出版ステータスPublished - 1987 9

ASJC Scopus subject areas

  • 物理学および天文学(その他)


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