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Measurements of the branching fractions of exclusive charmless BB meson decays with η′\eta^\prime or ω\omega mesons

Collaboration
•
Aug, 2001
8 pages
Published in:
  • Phys.Rev.Lett. 87 (2001) 221802
e-Print:
DOI:
Report number:
  • SLAC-PUB-8956,
  • BABAR-PUB-01-15
Experiments:
View in:
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Abstract: (arXiv)
We present the results of searches for B decays to charmless two-body final states containing η′\eta^\prime or ω\omega mesons, based on 20.7 fb−1^{-1} of data collected with the BABAR detector. We find the branching fractions B(B+→η′K+)=(70±8±5)×10−6{\cal B}(B^+\to\eta^\prime K^+) = (70\pm 8\pm 5)\times 10^{-6}, B(B0→η′K0)=(42−11+13±4)×10−6{\cal B}(B^0\to\eta^\prime K^0) = (42^{+13}_{-11}\pm 4)\times 10^{-6}, and B(B+→ωπ+)=6.6−1.8+2.1±0.7)×10−6{\cal B}(B^+\to\omega\pi^+)=6.6^{+2.1}_{-1.8}\pm 0.7)\times 10^{-6} where the first error quoted is statistical and the second systematic. We give measurements of four additional modes for which the 90% confidence level upper limits are B(B0→ωK0)<13×10−6{\cal B}(B^0\to\omega K^0) < 13\times 10^{-6}, B(B+→η′π+)<12×10−6{\cal B}(B^+\to\eta^\prime \pi^+) < 12\times 10^{-6}, B(B+→ωK+)<4×10−6{\cal B}(B^+\to \omega K^+) < 4\times 10^{-6}, and B(B0→ωπ0)<3×10−6{\cal B}(B^0\to\omega\pi^0) < 3\times 10^{-6}.
  • electron positron: colliding beams
  • electron positron: annihilation
  • Upsilon(10570): electroproduction
  • B: pair production
  • B: hadronic decay
  • meson: pair production
  • final state: (0charm)
  • eta(958)
  • omega(783)
  • B+: branching ratio