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Two-body B meson decays to eta and eta-prime: Observation of B ---> eta K*

Collaboration
•
Dec, 1999
12 pages
Published in:
  • Phys.Rev.Lett. 85 (2000) 520-524
e-Print:
DOI:
Report number:
  • SLAC-REPRINT-1999-119,
  • CLNS-99-1649,
  • CLEO-99-16
Experiments:
  • CESR-CLEO-II
View in:
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Abstract:
In a sample of 19 million produced B mesons, we have observed the decays B -> eta K* and improved our previous measurements of B -> eta'K. The branching fractions we measure for these decay modes are BR(B+ -> eta K*+) = (26.4 +9.6-8.2 +- 3.3) x 10−610^{-6}, BR(B0 -> eta K*0) = (13.8 +5.5-4.6 +- 1.6) x 10−610^{-6}, BR(B+ -> eta' K+) = (80 +10-9 +- 7) x 10−610^{-6} and BR(B0 -> eta' K0) = (89 +18-16 +- 9) x 10−610^{-6}. We have searched with comparable sensitivity for related decays and report upper limits for these branching fractions.
  • electron positron: colliding beams
  • electron positron: annihilation
  • Upsilon(10570): electroproduction
  • B: pair production
  • B: hadronic decay
  • B: decay modes
  • K*(892)
  • eta
  • eta(958)
  • B: branching ratio