Journal article

Time-dependent CP-violating asymmetry in B0→ρ0γ decays

Ushiroda, Y.; Sumisawa, K.; Taniguchi, N.; Adachi, I.; Aihara, H.; Arinstein, K.; Aushev, T.; Bahinipati, S.; Bakich, A.M.; Balagura, V.

We report the first measurement of CP-violation parameters in B0→ρ0γ decays based on a data sample of 657×106BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the time-dependent and direct CP-violating parameters, Sρ0γ=-0.83±0.65(stat)±0.18(syst) and Aρ0γ=-0.44±0.49(stat)±0.14(syst), respectively. © 2008 The American Physical Society.


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