Searches for B0 Decays to Combinations of Two Charmless Isoscalar Mesons
Abstract
We search for B meson decays into two-body combinations of η,η',ω, and ϕ mesons from 89×106 BB¯ pairs collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC. We find the branching fraction B(B0→ηω)=(4.0+1.3-1.2±0.4)×10-6 with a significance of 4.3σ. For the other decay modes we set the following 90% confidence level upper limits on the branching fractions, in units of 10-6: B(B0→ηη)<2.8, B(B0→ηη')<4.6, B(B0→η'η')<10, B(B0→η'ω)<2.8, B(B0→ηϕ)<1.0, B(B0→η'ϕ)<4.5, and B(B0→ϕϕ)<1.5.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2004
- DOI:
- arXiv:
- arXiv:hep-ex/0403046
- Bibcode:
- 2004PhRvL..93r1806A
- Keywords:
-
- 13.25.Hw;
- 11.30.Er;
- 12.15.Hh;
- Decays of bottom mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- Determination of Kobayashi-Maskawa matrix elements;
- High Energy Physics - Experiment
- E-Print:
- 7 pages, 1 postscript figure, Presented at the 39th Rencontres de Moriond on QCD and High-Energy Hadronic Interactions, 28 Mar - 4 Apr 2004, La Thuile, Italy. Submitted to Phys. Rev. Lett