| Observation of a resonancelike structure in the pi(+-)psi ' mass distribution in exclusive b -> k pi(+-)psi ' decays | |
| Choi, S. -K.1; Olsen, S. L.; Adachi, I.9; Aihara, H.40; Aulchenko, V.2; Aushev, T.; Aziz, T.37; Bakich, A. M.36; Balagura, V.13; Bedny, I.2 | |
| 刊名 | Physical review letters
 |
| 2008-04-11 | |
| 卷号 | 100期号:14页码:6 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.100.142001 |
| 通讯作者 | Choi, s. -k.() |
| 英文摘要 | 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. |
| WOS关键词 | CHARMONIUM ; ANNIHILATION ; X(3872) ; MESONS ; STATES ; BELLE ; QCD |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000254940900018 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2175887 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Choi, S. -K. |
| 作者单位 | 1.Gyeongsang Natl Univ, Chinju, South Korea 2.Budker Inst Nucl Phys, Novosibirsk 630090, Russia 3.Chiba Univ, Chiba, Japan 4.Univ Cincinnati, Cincinnati, OH 45221 USA 5.Univ Giessen, Giessen, Germany 6.Grad Univ Adv Studies, Hayama, Japan 7.Hanyang Univ, Seoul 133791, South Korea 8.Univ Hawaii, Honolulu, HI 96822 USA 9.High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan 10.Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Choi, S. -K.,Olsen, S. L.,Adachi, I.,et al. Observation of a resonancelike structure in the pi(+-)psi ' mass distribution in exclusive b -> k pi(+-)psi ' decays[J]. Physical review letters,2008,100(14):6. |
| APA | Choi, S. -K..,Olsen, S. L..,Adachi, I..,Aihara, H..,Aulchenko, V..,...&Zyukova, O..(2008).Observation of a resonancelike structure in the pi(+-)psi ' mass distribution in exclusive b -> k pi(+-)psi ' decays.Physical review letters,100(14),6. |
| MLA | Choi, S. -K.,et al."Observation of a resonancelike structure in the pi(+-)psi ' mass distribution in exclusive b -> k pi(+-)psi ' decays".Physical review letters 100.14(2008):6. |
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