Measurement of the time-dependent CP-violating asymmetry in $B^0 \to K^{0}_sπ^0γ$ decays

Details Measurement of the time-dependent CP-violating asymmetry in $B^0 \to K^{0}_sπ^0γ$ decays Measurement of the time-dependent CP-violating asymmetry in $B^0 \to K^{0}_sπ^0γ$ decays

2005-07-08

arxiv.org/abs/hep-ex/0507038v1

Phys.Rev.D72:051103,2005

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 7 postscript figures, submitted to PRD-RC

Scientific paper

10.1103/PhysRevD.72.051103

We present a measurement of the time-dependent CP-violating asymmetry in $B^0 \to K^{*}_0\gamma$ decays with $K^{*}_0\to K^{0}_s\pi^0$ based on 232 million $\Upsilon(4\mathrm{S})\to B\bar{B}$ decays collected with the BaBar detector at the PEP-II asymmetric-energy $e^{+}e^{-}$ collider at SLAC. In a sample containing $157\pm 16$ signal decays, we measure $S_{K^{*}_0\gamma} = -0.21 \pm 0.40 \pm 0.05$ and $C_{K^{*}_0\gamma}= -0.40 \pm 0.23 \pm 0.03$, where the first error is statistical and the second systematic. We also explore $B^0 \to K^{0}_s\pi^0\gamma$ decays with $1.1

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