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Time-DependentCP-Violating Asymmetry inB0→ρ0γDecays
Ushiroda, Y.,Sumisawa, K.,Taniguchi, N.,Adachi, I.,Aihara, H.,Arinstein, K.,Aushev, T.,Bahinipati, S.,Bakich, A. M.,Balagura, V.,Barberio, E.,Belous, K.,Bitenc, U.,Bondar, A.,Bozek, A.,Brač,ko, M American Physical Society 2008 Physical Review Letters Vol.100 No.2
<P>We report the first measurement of CP-violation parameters in B0-->rho0gamma decays based on a data sample of 657x10(6)BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the time-dependent and direct CP-violating parameters, Srho0gamma=-0.83+/-0.65(stat)+/-0.18(syst) and Arho0gamma=-0.44+/-0.49(stat)+/-0.14(syst), respectively.</P>