Abstract
We report the observation of charmless hadronic decays of charged B mesons to the final state K+K-pi+. Using a data sample of 347.5 fb^-1 collected at the Y(4S) resonance with the BABAR detector, we observe 429+/-43 signal events with a significance of 9.6 sigma. We measure the inclusive branching fraction BF(B+ --> K+K-pi+) = [5.0+/-0.5(stat)+/-0.5(syst)]x10^-6. Inspection of the Dalitz plot of signal candidates shows a broad structure peaking near 1.5 GeV/c^2 in the K+K- invariant mass distribution. We find the direct CP asymmetry to be consistent with zero.
Highlights
We report the observation of charmless hadronic decays of charged B mesons to the final state KKÿ
Surrounding the drift chamber (DCH) is a detector of internally reflected Cherenkov radiation (DIRC), designed for charged particle identification (PID)
Identification of charged pions and kaons is accomplished using energy loss information from the silicon vertex tracker (SVT) and DCH, and the Cherenkov angle and number of photons measured by the DIRC for tracks with momenta above 700 MeV=c
Summary
We report the observation of charmless hadronic decays of charged B mesons to the final state KKÿ. Using a data sample of 347:5 fbÿ1 collected at the 4S resonance with the BABAR detector, we observe 429 43 signal events with a significance of 9:6.
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