Prompt electron production in e+e- annihilations at 29 GeV

H. Aihara, M. Alston-Garnjost, D. H. Badtke, J. A. Bakken, A. Barbaro-Galtieri, A. V. Barnes, B. A. Barnett, B. J. Blumenfeld, A. D. Bross, C. D. Buchanan, O. Chamberlain, J. Chiba, C. Y. Chien, A. R. Clark, A. Cordier, O. I. Dahl, C. T. Day, K. A. Derby, P. H. Eberhard, D. L. FancherH. Fujii, T. Fujii, B. Gabioud, J. W. Gary, W. Gorn, N. J. Hadley, J. M. Hauptman, H. J. Hilke, W. Hofmann, J. E. Huth, J. Hylen, H. Iwasaki, T. Kamae, R. W. Kenney, L. T. Kerth, R. I. Koda, R. R. Kofler, K. K. Kwong, J. G. Layter, C. S. Lindsey, S. C. Loken, X. Q. Lu, G. R. Lynch, L. Madansky, R. J. Madaras, R. Majka, P. S. Martin, K. Maruyama, J. N. Marx, J. A.J. Matthews, S. O. Melnikoff, W. Moses, P. Nemethy, D. R. Nygren, P. J. Oddone, D. A. Park, A. Pevsner, M. Pripstein, P. R. Robrish, M. T. Ronan, R. R. Ross, F. R. Rouse, R. R. Sauerwein, G. Shapiro, M. D. Shapiro, B. C. Shen, W. E. Slater, M. L. Stevenson, D. H. Stork, H. K. Ticho, N. Toge, R. F. van Daalen Wetters, G. J. VanDalen, R. van Tyen, H. Videau, M. R. Wayne, W. A. Wenzel, H. Yamamoto, M. Yamauchi, M. E. Zeller, W. M. Zhang

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have measured the inclusive prompt electron cross section over a wide momentum range (P>0.5 GeV/c) with the PEP-4 TPC detector. The semielectronic branching fractions of the c and b quarks are (9.1±0.9 (stat.)±1.3 (syst.))% and (11.0±1.8±1.0)%, respectively. The b quark fragmentation function peaks at high z with 〈zb〉=0.74±0.05±0.03. The axial couplings to the neutral current are ac=2.3±1.4±1.0 for the c quark and ab=-2.0±1.9±0.5 for the b quark.

    Original languageEnglish (US)
    Pages (from-to)39-42
    Number of pages4
    JournalZeitschrift für Physik C Particles and Fields
    Volume27
    Issue number1
    DOIs
    StatePublished - Mar 1985

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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