A study of B-meson decays to eta_c K* and eta_c gamma K(*)

2007/07/19 by The BABAR Collaboration, Aubert, B.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.0707.2843

Abstract

We present preliminary results of a study of the two-body B-meson decays to a charmonium state (ccbar) and a K+ or K*0(892) meson using a sample of about 349 fb-1 of data collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. Here ccbar indicates either the eta_c state, reconstructed in the K_S K+- pi-+ and K+K-pi0 decay channels, or the h_c state, reconstructed in its decay to eta_c gamma. We measure BR(B0 -> eta_c K*0)=(6.1+-0.8_stat +- 1.1_syst) * 10-4, BR(B+ -> h_c K+) * BR(h_c -> eta_c gamma)<5.2 * 10-5 and BR(B0 -> h_c K*0) * BR(h_c -> eta_c gamma)<2.41 * 10^-4, at the 90% C.L.

Related

• Study of B -> eta' h
• Observation of B Meson Decays to eta pi and eta K
• Studies of B decays to Charmonium at BABAR
• Measurement of exclusive B decays to charmonium and K or K* branching fractions with the BABAR detector
• Two-Body B Meson Decays to η and η^' - Observation of B→ ηK^*