Observation of the decays alpha(0)(b) -> chi(c1)pk(-) and alpha(0)(b) ->chi(c2)pk(-)
文献类型：期刊论文
| 作者 | Aaij, R.40; Adeva, B.39; Adinolfi, M.49; Ajaltouni, Z.5; Akar, S.60; Albrecht, J.10; Alessio, F.40; Alexander, M.54; Ali, S.43; Alkhazov, G.31 |
| 刊名 | Physical review letters
 |
| 出版日期 | 2017-08-08 |
| 卷号 | 119期号:6页码:11 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.119.062001 |
| 英文摘要 | The first observation of the decays lambda(b)(0) -> chi(c1)pk(-) and lambda(0)(b) -> chi(c2)pk(-) is reported using a data sample corresponding to an integrated luminosity of 3.0 fb(-1), collected by the lhcb experiment in pp collisions at center-of-mass energies of 7 and 8 tev the following ratios of branching fractions are measured: b(lambda(0)(b) -> chi(c1)pk(-))/b(lambda(0)(b) -> j/psi pk(-)) = 0.242 +/- 0.014 +/- 0.013 +/- 0.009, b(lambda(0)(b) -> chi(c2)pk(-))/b(lambda(0)(b) -> j/psi pk(-)) = 0.248 +/- 0.020 +/- 0.014 +/- 0.009, b(lambda(0)(b) -> chi(c2)pk(-))/b(lambda(0)(b) -> chi(c1)pk(-)) = 1.02 +/- 0.010 +/- 0.02 +/- 0.05, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the branching fractions of the x(c1) -> j/psi gamma and chi(c2) -> j/psi gamma decays. using both decay modes, the mass of the ab baryon is also measured to be m(lambda b0) = 5619.44 +/- 0.28 +/- 0.26 mev/c(2), where the first and second uncertainties are statistical and systematic, respectively. |
| WOS关键词 | PENTAQUARK CANDIDATES ; MODEL ; TOOL |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000407100100006 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176974 |
| 专题 | 高能物理研究所 |
| 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.Clermont Univ, Univ Blaise Pascal, 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 Pierre et Marie Curie, Univ Paris Diderot, CNRS, IN2P3,LPNHE, Paris, France 9.Rhein Westfal TH Aachen, Inst Phys 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. Observation of the decays alpha(0)(b) -> chi(c1)pk(-) and alpha(0)(b) ->chi(c2)pk(-)[J]. Physical review letters,2017,119(6):11. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Observation of the decays alpha(0)(b) -> chi(c1)pk(-) and alpha(0)(b) ->chi(c2)pk(-).Physical review letters,119(6),11. |
| MLA | Aaij, R.,et al."Observation of the decays alpha(0)(b) -> chi(c1)pk(-) and alpha(0)(b) ->chi(c2)pk(-)".Physical review letters 119.6(2017):11. |
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来源：高能物理研究所
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