Time-Dependent CP Asymmetries in B0 -> Ks Pi0 gamma transition

Details Time-Dependent CP Asymmetries in B0 -> Ks Pi0 gamma transition Time-Dependent CP Asymmetries in B0 -> Ks Pi0 gamma transition

2005-07-13

arxiv.org/abs/hep-ex/0507059v1

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 2 figures (4 eps files), submitted to the Lepton Photon 2005 conference in Uppsala, Sweden and to the HEP2005 Europh

Scientific paper

We present measurements of CP-violation parameters in b -> s gamma transitions based on a sample of 386x10^6 BB pairs collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed in the B0 -> Ks Pi0 gamma decay channel irrespective to the Ks Pi0 intermediate state. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. We obtain the following results for the Ks Pi0 invariant mass covering the full range up to 1.8 GeV/c^2: S_{Ks Pi0 gamma} = +0.08 +-0.41(stat) +-0.10(syst), A_{Ks Pi0 gamma} = +0.12 +-0.27(stat) +-0.10(syst).

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