Measurement of Time-dependent CP-violating Asymmetries in B0 -> K*0 gamma (K*0 -> K0_S pi0) Decays

Details Measurement of Time-dependent CP-violating Asymmetries in B0 -> K*0 gamma (K*0 -> K0_S pi0) Decays Measurement of Time-dependent CP-violating Asymmetries in B0 -> K*0 gamma (K*0 -> K0_S pi0) Decays

2004-05-31

arxiv.org/abs/hep-ex/0405082v1

Phys.Rev.Lett.93:201801,2004

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1103/PhysRevLett.93.201801

We present a measurement of the time-dependent CP-violating asymmetries in $B^0 \to K^{*0}\gamma (K^{*0}\to K_S^0 \pi^0)$ decays based on 124 million $\Upsilon(4S)\to B^0\bar{B}^0$ decays collected with the BaBar detector at the PEP-II asymmetric-energy $B$ Factory at the Stanford Linear Accelerator Center. In a sample containing $105\pm 14$ signal decays, we measure $S_{K^{*0}} = 0.25 \pm 0.63 \pm 0.14$ and $S_{K^{*0}} = -0.57 \pm 0.32 \pm 0.09$, where the first error is statistical and the second systematic.

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