Published June 11, 1990 | Version v1
Journal article

Study of Ds+→φe+νe and the absolute Ds+→φπ+ branching fraction

Creators

  • 1. University of Cincinnati, Cincinnati, OH (USA)
  • 2. Princeton University, Princeton, NJ (USA)
  • 3. University of Mississippi, Oxford, MS (USA)
  • 4. Yale University, New Haven, CT (USA)
  • 5. University of Toronto, Toronto, Ontario (Canada)
  • 6. Universidade de Sao Paulo, Sao Paulo (Brazil)
  • 7. National Research Council, Ottawa, Ontario (Canada)
  • 8. Fermi National Accelerator Laboratory, Batavia, IL (USA)
  • 9. University of Colorado, Boulder, CO (USA)
  • 10. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro (Brazil)
  • 11. Carleton University, Ottawa, Ontario (Canada)
  • 12. University of California, Santa Barbara, CA (USA)

Description

We have searched for the decay Ds+→φe+νe in data from the Fermilab charm photoproduction experiment E691. The resulting upper limit is B(Ds+→φe+νe)<0.45B(Ds+→φπ+). Since the branching fraction for Ds+→φe+νe can be calculated from the measured branching fraction B(D+→ bar K *0e+νe) to be (1.7±0.3)%, this implies a 90%-confidence-level lower limit on B(Ds+→φπ+) of 3.4%

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
64
Journal Issue
24
Series
Phys. Rev. Lett.
Journal Page Range
2885-2888
ISSN
0031-9007
CODEN
PRLTA