Isospin analysis of B -> D*(D)over-barK and the absence of the Z(c)(3900) in B decays | |
Yang, Zhi1,2,3; Wang, Qian1,2; Meissner, Ulf-G.1,2,4,5 | |
刊名 | PHYSICS LETTERS B
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2017-12-10 | |
卷号 | 775页码:50-53 |
ISSN号 | 0370-2693 |
DOI | 10.1016/j.physletb.2017.10.049 |
英文摘要 | We study the isospin amplitudes in the exclusive B to D*(D) over barK decay process and fit the available D*(0)(D) over bar (0)invariant mass distributions near threshold. The analysis demonstrates that the production of the isospin triplet D*(D) over bar state is highly suppressed compared to the isospin singlet one. That explains why the Z(c)(3900) has not been found in B decays. In addition, the production of the negative charge-parity state might be further suppressed in the heavy quark limit. These two reasons which are based on the molecular assumption offer the first explanation why the Z(c)(3900) is absent in B decays. Further studies of the absence from both the experimental and the theoretical side is extremely important for understanding the nature of the X(3872) and the Z(c)(3900). (C) 2017 The Authors. Published by Elsevier B.V. |
资助项目 | DFG[TRR110] ; NSFC[11621131001] ; NSFC[CRC 110] ; Chinese Academy of Sciences (CAS) President's International Fellowship Initiative (PIFI)[2017VMA0025] ; CAS Pioneer Hundred Talents Program |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000417190700006 |
资助机构 | DFG ; NSFC ; Chinese Academy of Sciences (CAS) President's International Fellowship Initiative (PIFI) ; CAS Pioneer Hundred Talents Program |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.186/handle/113462/46166] ![]() |
专题 | 中国科学院近代物理研究所 |
通讯作者 | Wang, Qian |
作者单位 | 1.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 2.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 4.Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany 5.Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany |
推荐引用方式 GB/T 7714 | Yang, Zhi,Wang, Qian,Meissner, Ulf-G.. Isospin analysis of B -> D*(D)over-barK and the absence of the Z(c)(3900) in B decays[J]. PHYSICS LETTERS B,2017,775:50-53. |
APA | Yang, Zhi,Wang, Qian,&Meissner, Ulf-G..(2017).Isospin analysis of B -> D*(D)over-barK and the absence of the Z(c)(3900) in B decays.PHYSICS LETTERS B,775,50-53. |
MLA | Yang, Zhi,et al."Isospin analysis of B -> D*(D)over-barK and the absence of the Z(c)(3900) in B decays".PHYSICS LETTERS B 775(2017):50-53. |
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