Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)
文献类型：期刊论文
| 作者 | Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.5; Akar, S.59; Albrecht, J.10; Alessio, F.40; Alexander, M.53; Ali, S.43; Alkhazov, G.31 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2017-04-06 |
| 期号 | 4页码:16 |
| 关键词 | B physics Branching fraction Flavour changing neutral currents Hadron-hadron scattering (experiments) Rare decay |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/jhep04(2017)029 |
| 通讯作者 | Aaij, r.() |
| 英文摘要 | The suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-), excluding the j/psi and psi(2s) -> mu(+) mu(-) resonances, is observed for the first time with a significance of 5.5 standard deviations. the analysis is performed with proton- proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected with the lhcb experiment. the lambda(0)(b) -> p pi(-) mu(+) mu(-) branching fraction is measured relative to the lambda(0)(b) -> j/psi (-> mu(+) mu(-)) p pi(-) branching fraction giving b (lambda(0)(b) -> p pi(-) mu(+) mu(-))/b(lambda(0)(b) -> j/psi (-> mu(+) mu(-)) p pi(-)) = 0.044 +/- 0.012 +/- 0.007, where the first uncertainty is statistical and the second is systematic. this is the first observation of a b -> d transition in a baryonic decay. |
| WOS关键词 | TOOL |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000399274800001 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177454 |
| 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, Clermont 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, I Phys Inst, 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. Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)[J]. Journal of high energy physics,2017(4):16. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-).Journal of high energy physics(4),16. |
| MLA | Aaij, R.,et al."Observation of the suppressed decay lambda(0)(b) -> p pi(-) mu(+) mu(-)".Journal of high energy physics .4(2017):16. |
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