Details

Autor(en) / Beteiligte

• Hara, K
• Nakahama, Y
• Tajima, O
• Ushiroda, Y
• Anipko, D
• Aulchenko, V
• Aushev, T
• Aziz, T
• Bakich, A M
• Banerjee, S
• Bay, A
• Bizjak, I
• Blyth, S
• Bracko, M
• Brodzicka, J
• Browder, T E
• Chao, Y
• Chen, A
• Chen, W T
• Chistov, R
• Choi, Y
• Choi, Y K
• Chuvikov, A
• Cole, S
• Danilov, M
• Dragic, J
• Eidelman, S
• Epifanov, D
• Fratina, S
• Gershon, T
• Go, A
• Gokhroo, G
• Goldenzweig, P
• Ha, H
• Haba, J
• Hara, T
• Hokuue, T
• Iwasaki, M
• Iwasaki, Y
• Kakuno, H
• Kawai, H
• Kawasaki, T
• Korpar, S
• Krokovny, P
• Kulasiri, R
• Kuzmin, A
• Lee, M J
• Lesiak, T
• Li, J
• Limosani, A
• Lin, S-W
• Liu, Y
• Majumder, G
• Mandl, F
• Miyake, H
• Murakami, A
• Nagamine, T
• Nakano, E
• Nishida, S
• Nitoh, O
• Noguchi, S
• Nozaki, T
• Ogawa, S
• Olsen, S L
• Pakhlov, P
• Palka, H
• Sakai, Y
• Schietinger, T
• Schneider, O
• Schümann, J
• Senyo, K
• Sevior, M E
• Shapkin, M
• Singh, J B
• Somov, A
• Stanic, S
• Staric, M
• Sumiyoshi, T
• Takasaki, F
• Tamai, K
• Tamura, N
• Tanaka, M
• Teramoto, Y
• Tian, X C
• Trabelsi, K
• Unno, Y
• Urquijo, P
• Usov, Y
• Varner, G
• Varvell, K E
• Wang, C C
• Wang, C H
• Wang, M-Z
• Watanabe, Y
• Wedd, R
• Won, E
• Yamaguchi, A
• Yamauchi, M
• Zhang, C C
• Zhilich, V

Titel

Observation of time-dependent CP violation in B0 --> eta'K0 decays and improved measurements of CP asymmetries in B0 --> phiK0, KS0KS0KS0 and B0 --> J/psiK0 decays

Ist Teil von

• Physical review letters, 2007-01, Vol.98 (3), p.031802-031802

Ort / Verlag

United States

Erscheinungsjahr

2007

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We present improved measurements of CP-violation parameters in B(0) --> phiK(0), eta(')K(0), KS(0)KS(0)KS(0) decays based on a sample of 535 x 10(6) BB pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We obtain sin2phi1(eff)=+0.64+/-0.10(stat)+/-0.04(syst) for B(0) --> eta(')K(0), +0.50+/-0.21(stat)+/-0.06(syst) for B(0) --> phiK(0), and +0.30+/-0.32(stat)+/-0.08(syst) for B(0) --> KS(0)KS(0)KS(0) decays. We have observed CP violation in the B(0) --> eta(')K(0) decay with a significance of 5.6 standard deviations. We also perform an improved measurement of CP asymmetries in B(0) --> J/psiK(0) decays and obtain sin2phi1=+0.642+/-0.031(stat)+/-0.017(syst).