| First observation of the rare purely baryonic decay &itb&it0 -> &itp&it$(&itp&it)over-bar-$ | |
| Aaij, R.42; Adeva, B.41; Adinolfi, M.50; Ajaltouni, Z.5; Akar, S.61; Albrecht, J.10; Alessio, F.42; Alexander, M.55; Alfonso Albero, A.40; Ali, S.45 | |
| 刊名 | Physical review letters
 |
| 2017-12-04 | |
| 卷号 | 119期号:23页码:10 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.119.232001 |
| 通讯作者 | Aaij, r.() |
| 英文摘要 | The first observation of the decay of a b0 meson to a purely baryonic final state, b-0 -> p$(p)over-bar-$ , is reported. the proton-proton collision data sample used was collected with the lhcb experiment at center-of-mass energies of 7 and 8 tev and corresponds to an integrated luminosity of 3.0 fb(-1). the branching fraction is determined to be b(b-0 -> p$(p)over-bar-$) = (1.25 +/- 0.27 +/- 0.18) x 10(-8), where the first uncertainty is statistical and the second systematic. the decay mode b-0 -> p$(p)over-bar-$ is the rarest decay of the b-0 meson observed to date. the decay b-s(0 )-> p$(p)over-bar-$ is also investigated. no signal is seen and the upper limit b(b-s(0) -> p$(p)over-bar-$) < 1.5 x 10(-8) at 90% confidence level is set on the branching fraction. |
| WOS关键词 | B DECAYS ; TOOL |
| 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:000416947500004 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2178286 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaij, R. |
| 作者单位 | 1.CBPF, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Univ Savoie Mont Blanc, CNRS IN2P3, LAPP, Annecy Le Vieux, France 5.Univ Blaise Pascal, Clermont Univ, CNRS IN2P3, LPC, Clennont Ferrand, France 6.Aix Marseille Univ, CNRS IN2P3, CPPM, Marseille, France 7.Univ Paris 11, CNRS IN2P3, LAL, Orsay, France 8.Univ Paris Diderot, Univ Pierre & Marie Curie, CNRS IN2P3, LPNHE, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Adeva, B.,Adinolfi, M.,et al. First observation of the rare purely baryonic decay &itb&it0 -> &itp&it$(&itp&it)over-bar-$[J]. Physical review letters,2017,119(23):10. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).First observation of the rare purely baryonic decay &itb&it0 -> &itp&it$(&itp&it)over-bar-$.Physical review letters,119(23),10. |
| MLA | Aaij, R.,et al."First observation of the rare purely baryonic decay &itb&it0 -> &itp&it$(&itp&it)over-bar-$".Physical review letters 119.23(2017):10. |
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