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Observation of a resonancelike structure in the pi(+-)psi ' mass distribution in exclusive B -> K pi(+-)psi ' decays
- Authors
- Choi, S. -K.; Olsen, S. L.; Adachi, I.; Aihara, H.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Balagura, V.; Bedny, I.; Bitenc, U.; Bondar, A.; Bozek, A.; Bracko, M.; Brodzicka, J.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Chen, K. -F.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Eidelman, S.; Gabyshev, N.; Golob, B.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kah, D. H.; Kang, J. H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. O.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Krizan, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Limosani, A.; Lin, S. -W.; Liu, Y.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwartz, A. J.; Senyo, K.; Shapkin, M.; Shen, C. P.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Somov, A.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Suzuki, S. Y.; Takasaki, F.; Tamai, K.; Tanaka, M.; Teramoto, Y.; Tikhomirov, I.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Vervink, K.; Villa, S.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhulanov, V.; Zupanc, A.; Zyukova, O.
- Issue Date
- 11-4월-2008
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.100, no.14
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 100
- Number
- 14
- ISSN
- 0031-9007
- Abstract
- A distinct peak is observed in the pi(+/-)psi' invariant mass distribution near 4.43 GeV in B -> K pi(+/-)psi' decays. A fit using a Breit-Wigner resonance shape yields a peak mass and width of M=4433 +/- 4(stat)+/- 2(syst) MeV and Gamma=45(-13)(+18)(stat)(-13)(+30)(syst) MeV. The product branching fraction is determined to be B(B(0)-> K(-/+)Z(+/-)(4430))xB(Z(+/-)(4430)->pi(+/-)psi')=(4.1 +/- 1.0(stat)+/- 1.4(syst))x10(-5), where Z(+/-)(4430) is used to denote the observed structure. The statistical significance of the observed peak is 6.5 sigma. These results are obtained from a 605 fb(-1) data sample that contains 657x10(6) B (B) over bar pairs collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider.
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