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Inclusive charmed-baryon decays and lifetimes

  • Branko Guberina
  • Blaženka Melić
Theoretical physics

Abstract.

We have quantitatively reanalyzed the inclusive charmed-baryon decays. New ingredients are the Voloshin preasymptotic effects in semileptonic decays and the Cabibbo-subleading contributions to both semileptonic and nonleptonic decays. It has been found that the Cabbibo-subleading Voloshin contribution essentially improves the theoretical semileptonic branching ratio of \(\Lambda_c^{+}\), in agreement with experiment. The semileptonic branching ratios for \(\Xi_c^{+}\) and \(\Omega_c^{0}\) are found to be large, i.e., of the order of 20%. The lifetimes hierarchy is in a good qualitative and even quantitative agreement with experiment except for the \(\Xi_c^{+}\) lifetime, which is somewhat smaller than the experimental value. Future measurements, especially measurements of the semileptonic branching ratios for \(\Omega_c^{0}\), \(\Xi_c^{+}\) and \(\Xi_c^{0}\) should be decisive for the check of this approach.

Keywords

Quantitative Agreement Semileptonic Decay Future Measurement Nonleptonic Decay 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Branko Guberina
    • 1
  • Blaženka Melić
    • 1
  1. 1. Theoretical Physics Division, Rudjer Bošković Institute, P.O.B.1016, HR-10001 Zagreb, Croatia (e-mail: guberina@thphys.irb.hr, melic@thphys.irb.hr) HR

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