%0 Journal Article
%@ 0031-9007
%A Lin, SW
%A Chang, P
%A Abe, K
%A Abe, K
%A Adachi, I
%A Aihara, H
%A Anipko, D
%A Arinstein, K
%A Aulchenko, V
%A Aushev, T
%A Aziz, T
%A Bakich, AM
%A Barberio, E
%A Bay, A
%A Bedny, I
%A Belous, K
%A Bitenc, U
%A Bizjak, I
%A Blyth, S
%A Bondar, A
%A Bozek, A
%A Bracko, M
%A Chao, Y
%A Chen, A
%A Chen, KF
%A Chen, WT
%A Cheon, BG
%A Chistov, R
%A Choi, SK
%A Choi, Y
%A Choi, YK
%A Dalseno, J
%A Dash, M
%A Dragic, J
%A Eidelman, S
%A Fratina, S
%A Gabyshev, N
%A Gershon, T
%A Go, A
%A Gokhroo, G
%A Golob, B
%A Ha, H
%A Haba, J
%A Hara, T
%A Hayasaka, K
%A Hayashii, H
%A Hazumi, M
%A Heffernan, D
%A Hoshi, Y
%A Hou, S
%A Hou, WS
%A Hsiung, YB
%A Iijima, T
%A Ikado, K
%A Imoto, A
%A Inami, K
%A Ishikawa, A
%A Ishino, H
%A Itoh, R
%A Iwasaki, M
%A Iwasaki, Y
%A Kaji, H
%A Kang, JH
%A Katayama, N
%A Kawai, H
%A Kawasaki, T
%A Khan, HR
%A Kichimi, H
%A Kim, YJ
%A Kinoshita, K
%A Korpar, S
%A Krizan, P
%A Kulasiri, R
%A Kuo, CC
%A Kwon, YJ
%A Lange, JS
%A Lee, J
%A Lee, MJ
%A Lee, SE
%A Lesiak, T
%A Limosani, A
%A Mandl, F
%A Matsumoto, T
%A McOnie, S
%A Mitaroff, W
%A Miabayashi, K
%A Miyaki, H
%A Miyata, H
%A Miyazaki, Y
%A Mizuk, R
%A Mohapatra, D
%A Mori, T
%A Nakamura, I
%A Nakano, E
%A Nakao, M
%A Nishida, S
%A Nitoh, O
%A Noguchi, S
%A Nozaki, T
%A Ogawa, S
%A Ohshima, T
%A Okuno, S
%A Olsen, SL
%A Onuki, Y
%A Ozaki, H
%A Pakhlov, P
%A Pakhlova, G
%A Park, CW
%A Park, H
%A Park, KS
%A Pestotnik, R
%A Piilonen, LE
%A Sahoo, H
%A Sakai, Y
%A Satoyama, N
%A Schietinger, T
%A Schneider, O
%A Schumann, J
%A Schwartz, AJ
%A Senyo, K
%A Shapkin, M
%A Singh, JB
%A Sokolov, A
%A Somov, A
%A Soni, N
%A Stanic, S
%A Staric, M
%A Stoeck, H
%A Sumiyoshi, T
%A Tajima, O
%A Takasaki, F
%A Tamai, K
%A Tamura, N
%A Tanaka, M
%A Taylor, GN
%A Teramoto, Y
%A Tian, XC
%A Tikhomirov, I
%A Trabelsi, K
%A Tsukamoto, T
%A Uehara, S
%A Uglov, T
%A Ueno, K
%A Unno, Y
%A Uno, S
%A Usov, Y
%A Varner, G
%A Villa, S
%A Wang, CC
%A Wang, CH
%A Wang, MZ
%A Watanabe, Y
%A Won, E
%A Xie, QL
%A Yabsley, BD
%A Yamaguchi, A
%A Yamashita, Y
%A Yamauchi, M
%A Zhang, CC
%A Zhang, LM
%A Zhang, ZP
%A Zhilich, V
%A Zupanc, A
%D 2007
%F discovery:1308545
%I AMERICAN PHYSICAL SOC
%J PHYS REV LETT
%K INDUCED CP VIOLATION, BELLE, DETECTOR
%N 18
%T Observation of B decays to two kaons
%U https://discovery.ucl.ac.uk/id/eprint/1308545/
%V 98
%X Using 449x10(6) B(B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we observe clear signals for B+->(K) over bar K-0(+) and B-0 ->(K) over bar K-0(0) decays with 5.3 sigma and 6.0 sigma significance, respectively. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.22(-0.28-0.16)(+0.32+0.13))x10(-6) and B(B-0 ->(K) over bar K-0(0))=(0.87(-0.20)(+0.25)+/- 0.09)x10(-6), and partial-rate asymmetries A(CP)(B+->(K) over bar K-0(+))=0.13(-0.24)(+0.23)+/- 0.02 and A(CP)(B-0 ->(K) over bar K-0(0))=-0.58(-0.66)(+0.73)+/- 0.04. From a simultaneous fit, we also obtain B(B+-> K-0 pi(+))=(22.8(-0.7)(+0.8)+/- 1.3)x10(-6) and A(CP)(B+-> K-0 pi(+))=0.03 +/- 0.03 +/- 0.01. The first and second error in the branching fractions and the partial-rate asymmetries are statistical and systematic, respectively. No signal is observed for B-0 -> K+K- decays, and for this branching fraction, we set an upper limit of 4.1x10(-7) at the 90% confidence level.
%Z © 2007 The American Physical Society