학술논문
Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays
Document Type
article
Author
Nakano, H; Ishikawa, A; Sumisawa, K; Yamamoto, H; Adachi, I; Aihara, H; Said, S Al; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bansal, V; Behera, P; Beleño, C; Bhuyan, B; Bilka, T; Biswal, J; Bozek, A; Bračko, M; Červenkov, D; Chekelian, V; Cheon, BG; Chilikin, K; Cho, K; Choi, S-K; Choi, Y; Choudhury, S; Cinabro, D; Cunliffe, S; Dash, N; Di Carlo, S; Doležal, Z; Eidelman, S; Fast, JE; Ferber, T; Fulsom, BG; Garg, R; Gaur, V; Gabyshev, N; Garmash, A; Gelb, M; Giri, A; Goldenzweig, P; Guan, Y; Guido, E; Haba, J; Hara, T; Hayasaka, K; Hayashii, H; Hedges, MT; Hirose, S; Hou, W-S; Iijima, T; Inami, K; Inguglia, G; Itoh, R; Iwasaki, M; Iwasaki, Y; Jacobs, WW; Jaegle, I; Jeon, HB; Jia, S; Jin, Y; Julius, T; Kaliyar, AB; Karyan, G; Kawasaki, T; Kiesling, C; Kim, DY; Kim, HJ; Kim, JB; Kim, KT; Kim, SH; Kinoshita, K; Kodyš, P; Korpar, S; Kotchetkov, D; Križan, P; Kroeger, R; Krokovny, P; Kuhr, T; Kulasiri, R; Kumita, T; Kwon, Y-J; Lange, JS; Lee, IS; Lee, SC; Li, LK; Li, Y; Li, YB; Gioi, L Li; Libby, J; Liventsev, D; Lubej, M; Luo, T; MacNaughton, J; Masuda, M; Matsuda, T
Source
Physical Review D. 97(9)
Subject
Language
Abstract
We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B0-->phiK0. We use a sample of approximately 114 x 10(6) B-meson pairs taken at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK0S and phiK0L, where phi-->K+K-, K0S-->pi+pi-, and K0L is observed via its hadronic interactions. The other B meson in the event is tagged as either a B0 or Bbar0 from its decay products. The values of the CP-violation parameters are SphiK=0.47+/-0.34(stat)+0.08-0.06(syst) and CphiK=0.01+/-0.33(stat)+/-0.10(syst).