Observation of B -> J/psi K-1(1270) - art. no. 161601

Authors
Abe, K Abe, K Adachi, I Ahn, BS Aihara, H Asano, Y Aso, T Aulchenko, V Aushev, T Bakich, AM Banas, E Bartel, W Behari, S Behera, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chao, Y Cheon, BG Choi, SK Choi, Y Dragic, J Drutskoy, A Eidelman, S Enari, Y Fang, F Fujii, H Fukunaga, C Fukushima, M Garmash, A Gordon, A Gotow, K Guo, R Haba, J Hamasaki, H Hanagaki, K Hara, K Hara, T Hastings, NC Hayashii, H Hazumi, M Heenan, EM Higasino, Y Higuchi, I Higuchi, T Hirano, H Hojo, T Hoshi, Y 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 Jones, M Kagan, R Kakuno, H Kaneko, J Kang, JH Kang, JS Kapusta, P 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 Koishi, S Krokovny, P Kulasiri, R Kumar, S Kuzmin, A Kwon, YJ Lange, JS Lee, SH Liventsev, D Lu, RS Marlow, D Matsubara, T Matsui, S Matsumoto, S Matsumoto, T Mikami, Y Miyabayashi, K Miyake, H Miyata, H Moloney, GR Moorhead, GF 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 Olsen, SL 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 Schrenk, S Semenov, S Senyo, K Sevior, ME Shibuya, H Shwartz, B Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, JI Suzuki, K Suzuki, S Suzuki, SY Swain, SK Takahashi, T Takasaki, F Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Tanaka, Y Taylor, GN Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsuboyama, T Tsukamoto, T Uehara, S Ueno, K Unno, Y Uno, S Ushiroda, Y Vahsen, SE Varvell, KE Wang, CH Wang, JG Wang, MZ Watanabe, Y Won, E Yablsey, BD Yamada, Y Yamaga, M Yamaguchi, A Yamamoto, H Yamashita, Y Yamauchi, M Yanaka, S Yoshida, K Yusa, Y Yuta, H Zhang, CC Zhang, J Zhao, HW Zheng, Y Zhilich, V Zontar, D
Citation
K. Abe et al., Observation of B -> J/psi K-1(1270) - art. no. 161601, PHYS REV L, 8716(16), 2001, pp. 1601
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
8716
Issue
16
Year of publication
2001
Database
ISI
SICI code
0031-9007(20011015)8716:16<1601:OOB-JK>2.0.ZU;2-8
Abstract
We report the first observation of the exclusive decay process B --> J/psiK (1)(1270) using a sample of 11.2M B(B) over bar meson pairs collected in th e Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measur e branching fractions of B[B-0 --> J/psiK(1)(0)(1270)] = (1.30 +/- 0.34 +/- 0.32) x 10(-3) and B[B+ --> J/psiK(1)(+)(1270)] = (1.80 +/- 0.34 +/- 0.39) x 10(-3), where the first error is statistical and the second is systemati c. These modes constitute approximately 15% of the total number of B --> J/ psiX decays. No evidence is seen for B --> J/psiK(1)(1400) and we set an up per limit for this branching fraction.