Measurement of the branching fraction for B -> eta ' K and search for B ->eta 'pi(+)

Authors
Abe, K Abe, K Abe, R Adachi, I Ahn, BS Aihara, H Akatsu, M Asano, Y Aso, T Aulchenko, V Bakich, AM Banas, E Behari, S Behera, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chao, Y Cheon, BG Chistov, R Choi, SK Choi, Y Dong, LY Dragic, J Eidelman, S Enari, Y Fang, F Fujii, H Fukunaga, C Fukushima, M Gabyshev, N Garmash, A Gershon, T Gordon, A Gotow, K Guo, R Haba, J Hamasaki, H Hara, K Hara, T Hastings, NC Hayashii, H Hazumi, M Heenan, EM Higuchi, I Higuchi, T Hirano, H Hojo, T Hoshi, Y Hoshina, K Hou, SR Hou, WS Hsu, SC Huang, HC Igarashi, Y Iijima, T Ikeda, H Inami, K Ishikawa, A Ishino, H Itoh, R Iwai, G Iwasaki, H Iwasaki, Y Jackson, DJ Jalocha, P Jang, HK Kaneko, J Kang, JH Kang, JS Katayama, N Kawai, H Kawai, H Kawamura, N Kawasaki, T Kichimi, H Kim, DW Kim, H Kim, HJ Kim, H Kim, SK Kim, TH Kinoshita, K Kobayashi, S Konishi, H Krokovny, P Kulasiri, R Kumar, S Kuzmin, A Kwon, YJ Lange, JS Leder, G Lee, SH Liventsev, D Lu, RS Matsubara, T Matsumoto, S Matsumoto, T MacNaughton, J Mikami, Y Miyabayashi, K Miyake, H Miyata, H Moloney, GR Mori, S Mori, T Murakami, A Nagamine, T Nagasaka, Y Nagashima, Y Nakadaira, T Nakano, E Nakao, M Nam, JW Narita, S Natkaniec, Z Neichi, K Nishida, S Nitoh, O Noguchi, S Nozaki, T Ogawa, S Ohshima, T Okabe, T Okuno, S Ozaki, H Pakhlov, P Palka, H Park, CS Park, CW Park, H Peak, LS Peters, M Piilonen, LE Prebys, E Rodriguez, JL Root, N Rozanska, M Rybicki, K Sagawa, H Sakai, Y Sakamoto, H Satapathy, M Satpathy, A Semenov, S Senyo, K Sevior, ME Shibuya, H Shwartz, B Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, K Suzuki, S Suzuki, SY Swain, SK Takahashi, T Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Tanaka, Y Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsuboyama, T Tsukamoto, T Uehara, S Ueno, K
Citation
K. Abe et al., Measurement of the branching fraction for B -> eta ' K and search for B ->eta 'pi(+), PHYS LETT B, 517(3-4), 2001, pp. 309-318
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
517
Issue
3-4
Year of publication
2001
Pages
309 - 318
Database
ISI
SICI code
0370-2693(20011004)517:3-4<309:MOTBFF>2.0.ZU;2-3
Abstract
We report measurements for two-body charmless hadronic B decays with an eta ' meson in the final state. Using 11.1 X 10(6) B (B) over bar pairs collec ted with the Belle detector, we find BF(B+ --> eta 'K+) = (79(-11)(+12) +/- 9) X 10(-6) and BF(B-0 --> eta 'K-0) = (55(-16)(+19) +/- 8) X 10(-6), wher e the first and second errors are statistical and systematic, respectively. No signal is observed in the mode B+ q'7r+, and we set a90% confidence lev el upper limit of BF(B+ - q'7r+) < 7 x 10-6. The CP asymmetry in B-<plus/mi nus> --> eta 'K+/- decays is investigated and a limit at 90% confidence lev el of -0.20 < A(CP) < 0.32 is obtained. (C) 2001 Elsevier Science B.V. All rights reserved.