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.

doi:10.1103/PhysRevD.76.011104

Improved measurement of CP-violating parameters in B→ρ+ρ- decays

Somov, A. ; Schwartz, A.J. ; Adachi, I. ; Aihara, H.[...]

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.

Published in:

Physical Review D - Particles, Fields, Gravitation and Cosmology, 76, 1, 011104

Year:

2007

DOI:

10.1103/PhysRevD.76.011104

Other identifiers:

Scopus: 2-s2.0-34447304051
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Laboratories:

LPHE

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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
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Journal Articles
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