Charged hadron production in e+e- annihilation at 29 GeV

H. Aihara, M. Alston-Garnjost, D. H. Badke, J. A. Bakken, A. Barbaro-Galtieri, A. V. Barnes, B. A. Barnett, B. J. Blumenfeld, A. D. Bross, C. D. Buchanan, O. Chamberlain, C. Chen, J. Chiba, C. Y. Chien, A. R. Clark, O. I. Dahl, C. T. Day, P. Delpierre, K. A. Derby, P. H. EberhardD. L. Fancher, H. Fujii, T. Fujii, B. Gabioud, J. W. Gary, W. Gorn, W. Gu, 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, G. W. London, X. Q. Lu, G. R. Lynch, L. Madansky, R. J. Madaras, R. Majka, J. Mallet, P. S. Martin, K. Maruyama, J. N. Marx, J. A. 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, M. Urban, R. F.Van Daalen Wetters, G. J. Vandalen, R. Van Tyen, H. Videau, M. R. Wayne, W. A. Wenzel, H. A. Yamamoto, M. Yamauchi, M. E. Zeller, W. M. Zhang

    Research output: Contribution to journalArticlepeer-review


    The inclusive production cross sections and mean multiplicities of K, p, and p in e+e- annihilation at a c.m. energy of 29 GeV have been measured with the time-projection chamber at PEP, using ionization energy loss to separate particle types. On average, 10.70.6, 1.350.13 K, and 0.600.08 p,p are contained in an annihilation event. The fraction of pions among final-state particles decreases from over 95% at 0.3 GeV/c momentum to about 60% at high momentum; the kaon and proton fractions rise correspondingly.

    Original languageEnglish (US)
    Pages (from-to)577-580
    Number of pages4
    JournalPhysical Review Letters
    Issue number8
    StatePublished - 1984

    ASJC Scopus subject areas

    • General Physics and Astronomy


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