B meson decays to charmless meson pairs containing eta or eta' mesons
Collaboration
12 pages
Published in:
- Phys.Rev.D 80 (2009) 112002
e-Print:
- 0907.1743 [hep-ex]
Report number:
- BABAR-PUB-08-12,
- SLAC-PUB-13703,
- BABAR-PUB-09-017
Experiments:
View in:
Citations per year
Abstract: (arXiv)
We present updated measurements of the branching fractions for B0 meson decays to etaK0, etaeta, etaphi, etaomega, eta'K0, eta'eta', eta'phi, and eta'omega, and branching fractions and CP-violating charge asymmetries for B+ decays to etapi+, etaK+, eta'pi+ and eta'K+. The data represent the full dataset of 467 10^{6} BB pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B0\to eta'K0, we find evidence for three B0 decay modes at greater than 3.0sigma significance. We find B(B0\to etaK0) = (1.15^{+0.43}_{-0.38} \pm0.09)x10^{-6}, B(B0\to etaomega) = (0.94^{+0.35}_{-0.30}\pm0.09)x10^{-6}, and B(B0\to eta'omega) = (1.01^{+0.46}_{-0.38}\pm0.09)x10^{-6}, where the first (second) uncertainty is statistical (systematic). For the B+\to etaK+ decay mode, we measure the charge asymmetry A_{ch}(B+\to etaK+) = -0.36 \pm 0.11 \pm 0.03.Note:
- 12 pages, 6 figures, submitted to Phys. Rev. D
- 13.25.Hw
- 12.15.Hh
- 11.30.Er
- electron positron: annihilation
- B: pair production
- B: hadronic decay
- final state: (0charm)
- meson: pair production
- eta
- eta(958)
References(53)
Figures(6)