Measurement of CP-violating parameters in B -> eta ' K decays
- Chen, KF
- Hara, K
- Abe, K
- Abe, K
- Abe, T
- Adachi, I
- Ahn, BS
- Aihara, H
- Akatsu, M
- Asano, Y
- Aso, T
- Aulchenko, V
- Aushev, T
- Bakich, AM
- Ban, Y
- Bay, A
- Bedny, I
- Behera, PK
- Bizjak, I
- Bondar, A
- Bozek, A
- Bracko, M
- Brodzicka, J
- Browder, TE
- Casey, BCK
- Chang, P
- Chao, Y
- Cheon, BG
- Chistov, R
- Choi, SK
- Choi, Y
- Choi, YK
- Danilov, M
- Dong, LY
- Dragic, J
- Eidelman, S
- Eiges, V
- Enari, Y
- Fang, F
- Fukunaga, C
- Gabyshev, N
- Garmash, A
- Gershon, T
- Golob, B
- Gordon, A
- Guo, R
- Haba, J
- Hanagaki, K
- Handa, F
- Hara, T
- Hastings, NC
- Hayashii, H
- Hazumi, M
- H
DOIAbstract
We present measurements of CP-violating parameters in B-0 ((B) over bar (0)) --> eta'K-S(0) and B+/- --> eta'K+/- decays based on a 41.8 fb(-1) data sample collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We fully reconstruct one neutral B meson as a B-0((B) over bar (0)) --> eta'K-S(0) CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters S-eta'KS(0) = 0.28+/-0.55(stat)(-0.08)(+0.07)(syst), and A(eta'KS)(0) = 0.13+/-0.32(stat)(-0.06)(+0.09)(syst). We also reconstruct charged B+/- --&g...
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