Charged d* production in e+e- annihilation at 29 GeV and a limit on D0-D»0 mixing

H. Yamamoto, W. B. Atwood, P. H. Baillon, 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. Johnson, H. Kichimi, J. Kirkby, D. E. Klem, D. E. Koop, J. Ludwig, G. B. MillsA. Ogawa, T. Pal, D. Perret-Gallix, R. Pitthan, D. L. Pollard, C. Y. Prescott, L. Z. Rivkin, L. S. Rochester, W. Ruckstuhl, M. Sakuda, S. Sherman, E. J. Siskind, R. Stroynowski, S. Q. Wang, S. G. Wojcicki, W. G. Yan, C. C. Young

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Abstract

We have studied inclusive D* production using the DELCO detector at PEP. Our technique involved kaon identification in the momentum range above 3.2 GeV/c using a threshold gas erenkov counter. This leads to a model-independent upper limit on D0-D»0 mixing of 8.1% (90% confidence level). We also have measured the charm fragmentation function, which peaks at xPD*(Ebeam2- MD*2)12 of 0.560.06(stat.), and the total cross section for D* production, (D*)=0.1400.021(stat.)0.032(syst.) nb (x>0.3, with radiative correction).

Original languageEnglish
Pages (from-to)522-525
Number of pages4
JournalPhysical Review Letters
Volume54
Issue number6
DOIs
Publication statusPublished - Jan 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yamamoto, H., Atwood, W. B., Baillon, P. H., Barish, B. C., Bonneaud, G. R., Courau, A., Donaldson, G. J., Dubois, R., Duro, M. M., Elsen, E. E., Gao, S. G., Huang, Y. Z., Irwin, G. M., Johnson, R., Kichimi, H., Kirkby, J., Klem, D. E., Koop, D. E., Ludwig, J., ... Young, C. C. (1985). Charged d* production in e+e- annihilation at 29 GeV and a limit on D0-D»0 mixing. Physical Review Letters, 54(6), 522-525. https://doi.org/10.1103/PhysRevLett.54.522