Published September 5, 1991 | Version v1
Journal article

Determination of the relative branching ratios for panti p→π+π- and panti p→K+K-

Creators

  • 1. CSNSM, CNRS/IN2P3, 91 - Orsay (France)
  • 2. Ioannina Univ. (Greece)
  • 3. Demokritos INP, Athens (Greece)
  • 4. Technical Univ. Delft (Netherlands)
  • 5. Boston Univ., MA (USA)
  • 6. Inst. J. Stefan, Dept. of Physics, Ljubljana (Yugoslavia)
  • 7. ETH-IMP, Villigen (Switzerland)
  • 8. Fribourg Univ. (Switzerland)
  • 9. Thessaloniki Univ. (Greece)
  • 10. Coimbra Univ. (Portugal)
  • 11. LIP, Lisbon (Portugal)
  • 12. MSI, Stockholm (Sweden)
  • 13. DPhPE, CEN-Saclay, 91 - Gif-sur-Yvette (France)
  • 14. Paul-Scherrer-Inst. (PSI), Villigen (Switzerland)
  • 15. Liverpool Univ. (UK)
  • 16. CPPM, CNRS/IN2P3, 13 - Marseille (France)
  • 17. CERN, Geneva (Switzerland)
  • 18. Athens Univ. (Greece)
  • 19. Basel Univ. (Switzerland)

Description

The ratio of the branching fractions for panti p→K+K- and panti p→π+π- was determined with the CPLEAR detector, by stopping antiprotons in a gaseous hydrogen target at 15 bar pressure. It was found to be BR (K+K-)/BR(π+π-)=0.205±0.016. The fraction of P-wave annihilation at rest at this target density was deduced to be (38±9)%. (orig.)

Additional details

Publishing Information

Journal Title
Physics Letters, (Section) B
Journal Volume
267
Journal Issue
1
Series
Phys. Lett., B.
Journal Page Range
154-158
ISSN
0370-2693
CODEN
PYLBA

Optional Information

Collaborations
CPLEAR Collaboration.