Isospin analysis of B -&gt; D*(D)over-barK and the absence of the Z(c)(3900) in B decays

doi:10.1016/j.physletb.2017.10.049

	*Isospin analysis of B -> D(D)over-barK and the absence of the Z(c)(3900) in B decays**
	Yang, Zhi 1,2,3; Wang, Qian 1,2; Meissner, Ulf-G.1,2,4,5
刊名	PHYSICS LETTERS B
	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.