Prompt electron production from the DELCO detector at the SLAC storage ring PEP

T. Pal, W. B. Atwood, B. C. Barish, G. R. Bonneaud, A. Courau, G. J. Donaldson, R. Dubois, M. M. Duro, E. E. Elsen, S. G. Gao, Y. Z. Huang, G. M. Irwin, R. P. Johnson, H. Kichimi, J. Kirkby, D. E. Klem, D. E. Koop, J. Ludwig, G. B. Mills, A. OgawaR. Pitthan, D. L. Pollard, C. Y. Prescott, L. S. Rochester, W. Ruckstuhl, M. Sakuda, S. S. Sherman, R. Stroynowski, S. Q. Wang, S. G. Wojcicki, H. Yamamoto, W. G. Yan, C. C. Young

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20 Citations (Scopus)


We report final results on prompt electron production in hadronic events from e+e- annihilations at s =29 GeV, obtained with the DELCO detector at the SLAC storage ring PEP. We find the semielectronic branching ratios of charm and bottom quarks to be B(cse+e)=(11.6-0.9 +1.1)% and B(bce-e)=(14.9-1.9 +2.2)% respectively. These results, from the complete data set, are consistent with an earlier analysis of partial data and indicate hard fragmentation functions for both c and b quarks, with mean values zc=0.590.04 and zb=0.720.05. The errors indicated here are a combination of statistical and systematic uncertainties.

Original languageEnglish
Pages (from-to)2708-2710
Number of pages3
JournalPhysical Review D
Issue number9
Publication statusPublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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