Improved measurement of CP-violating parameters in B→ρ+ρ- decays
- Somov, A.
- Schwartz, A.J.
- Adachi, I.
- Aihara, H.
- Anipko, D.
- Aulchenko, V.
- Aushev, T.
- Bakich, A.M.
- Bedny, I.
- Bitenc, U.
- Bizjak, I.
- Bondar, A.
- Bračko, M.
- Browder, T.E.
- Chang, M.-C.
- Chao, Y.
- Chen, A.
- Chen, K.-F.
- Chen, W.T.
- Cheon, B.G.
- Chistov, R.
- Cho, I.-S.
- Choi, Y.
- Choi, Y.K.
- Cole, S.
- Dalseno, J.
- Dash, M.
- Dragic, J.
- Drutskoy, A.
- Eidelman, S.
- Fratina, S.
- Gokhroo, G.
- Golob, B.
- Ha, H.
- Haba, J.
- Hara, T.
- Hayasaka, K.
- Hayashii, H.
- Hazumi, M.
- Heffernan, D.
- Hokuue, T.
- Hoshi, Y.
- Hou, W.-S.
- Hyun, H.J.
- Iijima, T.
- Inami, K.
- Ishikawa, A.
- Ishino, H.
- Itoh, R.
- Iwasaki, M.
- Iwasaki, Y.
- Joshi, N.
- Kah, D.H.
- Kang, J.H.
- Katayama, N.
- Kichimi, H.
- Kim, H.O.
- Kim, Y.J.
- Kinoshita, K.
- Korpar, S.
- Križan, P.
- Krokovny, P.
- Kulasiri, R.
- Kumar, R.
- Kuo, C.C.
- Kuzmin, A.
- Kwon, Y.-J.
- Lee, J.S.
- Lee, M.J.
- Lee, S.E.
- Lesiak, T.
- Limosani, A.
- Lin, S.-W.
- Marlow, D.
- Matsumoto, T.
- McOnie, S.
- Medvedeva, T.
- Mitaroff, W.
- Miyake, H.
- Miyata, H.
- Miyazaki, Y.
- Mizuk, R.
- Mohapatra, D.
- Moloney, G.R.
- Nakao, M.
- Nitoh, O.
- Nozaki, T.
- Ogawa, S.
- Ohshima, T.
- Okuno, S.
- Olsen, S.L.
- Onuki, Y.
- Ozaki, H.
- Pakhlov, P.
- Pakhlova, G.
- Park, C.W.
- Pestotnik, R.
- Piilonen, L.E.
- Sahoo, H.
- Sakai, Y.
- Schneider, O.
- Schümann, J.
- Senyo, K.
- Shapkin, M.
- Shen, C.P.
- Shibuya, H.
- Shwartz, B.
- Starič, M.
- Stoeck, H.
- Sumisawa, K.
- Sumiyoshi, T.
- Takasaki, F.
- Tamura, N.
- Tanaka, M.
- Teramoto, Y.
- Tian, X.C.
- Trabelsi, K.
- Tsukamoto, T.
- Uehara, S.
- Ueno, K.
- Uglov, T.
- Unno, Y.
- Uno, S.
- Urquijo, P.
- Usov, Y.
- Varner, G.
- Varvell, K.E.
- Villa, S.
- Vinokurova, A.
- Wang, C.C.
- Wang, C.H.
- Wang, M.-Z.
- Wang, P.
- Watanabe, Y.
- Won, E.
- Yabsley, B.D.
- Yamaguchi, A.
- Yamashita, Y.
- Zhang, Z.P.
- Zupanc, A.
Publication date
November 2010
DOI Publisher
American Physical Society (APS)Abstract
We present a measurement of the CP-violating asymmetry in B0→ρ+ρ- decays using 535×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. We measure CP-violating coefficients A=0.16±0.21(stat)±0.08(syst) and S=0.19±0. 30(stat)±0.08(syst). These values are used to determine the unitarity triangle angle 2 using an isospin analysis; the solution consistent with the standard model lies in the range 54°< 2<113° at the 90% confidence level. © 2007 The American Physical Society
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