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Time-dependent Dalitz Plot Measurement of CP Parameters in B0 --> Ks Pi+ Pi- Decays

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arxiv 0811.3665 v2 pith:GK5MLY3R submitted 2008-11-22 hep-ex

classification hep-ex
keywords decaysviolationparametersconsistentdalitzdatameasurementmeasurements
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a time-dependent Dalitz plot measurement of CP violation parameters in B0 --> Ks Pi+ Pi- decays. These results are obtained from a large data sample that contains 657 million BBbar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B0 --> rho0(770) Ks, B0 --> f0(980) Ks and B0 --> K*+(892) Pi-, while measurements of mixing-induced CP violation in B0 --> rho0(770) Ks, B0 --> f0(980) Ks decays are consistent with that of b --> c cbar s decays. We also measured the phase difference between B0 --> K*+(892) Pi- and B0B --> K*-(892) Pi+ which may be used to extract phi3.

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  1. Quasi-Two-Body $B\to P (K^+K^-, \pi^+\pi^-)$ Decays with $f_0(980)$ Resonance

    hep-ph 2025-01 conditional novelty 5.0 of 10

    PQCD predictions for quasi-two-body B -> P f0(980) -> P(K+K-, π+π-) decays, with two-body B -> P f0(980) branching fractions extracted from the pion mode.

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