Observation of b- -> (p)over-bar lambda d-0 at belle
文献类型：期刊论文
| 作者 | Chen, P.1; Wang, M. -Z.1; Adachi, I.11; Aihara, H.52; Asner, D. M.40; Aulchenko, V.2,3; Aushev, T.18; Bakich, A. M.46; Barberio, E.30; Belous, K.17 |
| 刊名 | Physical review d
 |
| 出版日期 | 2011-10-10 |
| 卷号 | 84期号:7页码:7 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/physrevd.84.071501 |
| 通讯作者 | Chen, p.() |
| 英文摘要 | We study b- meson decays to (p) over bar lambda d-(*)0 final states using a sample of 657 x 10(6) b (b) over bar events collected at the gamma(4s) resonance with the belle detector at the kekb asymmetric-energy e(+)e(-) collider. the observed branching fraction for b- -> (p) over bar lambda d-0 is (1.43(-0.25)(+0.28) +/-0.18) x 10(-5) with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. most of the signal events have the (p) over bar lambda mass peaking near threshold. no significant signal is observed for b- -> (p) over bar lambda d-0 and the corresponding upper limit on the branching fraction is 4.8 x 10(-5) at the 90% confidence level. |
| WOS关键词 | DECAYS ; DETECTOR |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000296527100001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176028 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chen, P. |
| 作者单位 | 1.Natl Taiwan Univ, Dept Phys, Taipei, Taiwan 2.Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia 3.Novosibirsk State Univ, Novosibirsk 630090, Russia 4.Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic 5.Univ Cincinnati, Cincinnati, OH 45221 USA 6.Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan 7.Univ Giessen, Giessen, Germany 8.Gifu Univ, Gifu, Japan 9.Hanyang Univ, Seoul 133791, South Korea 10.Univ Hawaii, Honolulu, HI 96822 USA |
| 推荐引用方式 GB/T 7714 | Chen, P.,Wang, M. -Z.,Adachi, I.,et al. Observation of b- -> (p)over-bar lambda d-0 at belle[J]. Physical review d,2011,84(7):7. |
| APA | Chen, P..,Wang, M. -Z..,Adachi, I..,Aihara, H..,Asner, D. M..,...&Zhang, Z. P..(2011).Observation of b- -> (p)over-bar lambda d-0 at belle.Physical review d,84(7),7. |
| MLA | Chen, P.,et al."Observation of b- -> (p)over-bar lambda d-0 at belle".Physical review d 84.7(2011):7. |
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