Charmed Quark Fragmentation in e+e- Annihilations at 29 GeV

  • R. Stroynowski


The production of charmed quarks has been studied now for several years. So far, the best measurements of their decays have been done at SPEAR [1]. It has been found there, that the charmed quark fragmentation results predominantly in the D and D* particles. Their branching ratios into various final states have been measured with about 15% accuracy. However, the shape of the charm fragmentation function has not been established in the SPEAR experiments. Due to the large mass of charmed mesons and low c.m. energy the kinematic range accessible there was very small, e.g., the fragmentation of charmed quark into D* was limited to z = ED*/Ebeam ≥ 0.7. Thus the detailed study of the dynamics of the charm fragmentation process were not possible. The determination of the charm fragmentation function is much easier at higher energies, where the kinematic restrictions do not play any significant role.


Charm Quark Kinematic Range Particle Identification Beam Pipe Charmed Meson 
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  1. 1.
    G. Goldhaber et al., Phys. Lett. 69B(1977) 503.ADSGoogle Scholar
  2. M. Piccolo et al., Phys. Lett. 70B(1977) 260.ADSGoogle Scholar
  3. G. Trilling, Phys. Reports 75(1981) 57.ADSCrossRefGoogle Scholar
  4. 2.
    The members of the Caltech-SLAC-Stanford Collaboration at DELCO are: W.B, Atwood, P.H. Baillon, B.C. Barish, G.R. Bonneaud, H. DeStaebler, G.J. Donaldson, R. Dubois, M,M. Duro, S.G, Gao, Y.Z. Huang, G.M. Irwin, R.P. Johnson, H. Kichimi, J, Kirkby, D. Klem, D.E. Koop, J, Ludwig, G.B. Mills, A. 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.S, Sherman, E.J, Siskind, R. Stroynowski, R,E. Taylor, S.Q. Wang, S.G. Wogcicki, H. Yamamoto, W.G. Yan and C.C. Young.Google Scholar
  5. 3.
    V.L. Fitch et al., Phys. Rev. Lett. 46(1981) 761.MathSciNetADSCrossRefGoogle Scholar
  6. R.W. Kadel, Princeton University, Ph.D. Thesis C00-3072-89 (1977).Google Scholar
  7. 4.
    M. Roos et al., “Reviews of Particle Properties,” Phys, Lett. 111B (1962) 1.Google Scholar
  8. 5.
    Y. Yelton et al., Phys, Rev. Lett. 49(1982) 4301CrossRefGoogle Scholar
  9. 6.
    M. Althoff et al,, DESY83-010 (1983) preprint,Google Scholar
  10. 7.
    C. Peterson et al., Phys. Rev. D27(1983) 105.ADSGoogle Scholar

Copyright information

© Plenum Press 1985

Authors and Affiliations

  • R. Stroynowski
    • 1
  1. 1.California Institute of TechnologyPasadenaUSA

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