 DOCUMENT METADATASLAC Publication: SLAC-PUB-14557
SLAC Release Date: December 13, 2011
Observation of the Rare Decay B+ \to K+pi0pi0 and Measurement of the Quasi-two Body Contributions B+ \to K*(892)+pi0, B+ \to f0(980)K+ and B+ \to chic0K+
Lees, J.
We report an analysis of the charmless hadronic decays of charged B meson to the final state K+pi0pi0, using a data sample of 470+/-2.8 million BBbar events collected at the Y(4S) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and CP asymmetry to be B(B+ \to K+pi0pi0)=(16.2+/-1.2+/-1.5)x10^-6 and A_CP(B+ to K+pi0pi0)=-0.06+/-0.06+/-0.04, where the uncertainties are statistic... Show Full Abstract
We report an analysis of the charmless hadronic decays of charged B meson to the final state K+pi0pi0, using a data sample of 470+/-2.8 million BBbar events collected at the Y(4S) resonance. We observe an excess of signal events, with a significance above 10 standard deviations including systematic uncertainties, and measure the branching fraction and CP asymmetry to be B(B+ \to K+pi0pi0)=(16.2+/-1.2+/-1.5)x10^-6 and A_CP(B+ to K+pi0pi0)=-0.06+/-0.06+/-0.04, where the uncertainties are statistical and systematic respectively. Additionally we study the contributions of the B+ \to K*(892)+pi0, B+ \to f0(980)K+ and B+ \to chic0K+ quasi-two body decays. We report the world's best measurements of the branching fractions and CP asymmetry of the B+ \to K+pi0pi0 and B+ \to K*(892)+pi0 channels. Show Partial Abstract
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