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题名: Two-pole structure of the D-0*(2400)
作者: Albaladejo, M ;  Fernandez-Soler, P ;  Guo, FK ;  Nieves, J
刊名: PHYSICS LETTERS B
出版日期: 2017
卷号: 767, 页码:465-469
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1016/j.physletb.2017.02.036
通讯作者: Guo, FK (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China. ;  Guo, FK (reprint author), Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: The so far only known charmed non-strange scalar meson is dubbed as D-0(*)(2400) in the Review of Particle Physics. We show, within the framework of unitarized chiral perturbation theory, that there are in fact two (I = 1/2, J(P) = 0(+)) poles in the region of the D-0(*)( 2400) in the coupled-channel D pi, D eta and D-s (K) over bar scattering amplitudes. With all the parameters previously fixed, we predict the energy levels for the coupled-channel system in a finite volume, and find that they agree remarkably well with recent lattice QCD calculations. This successful description of the lattice data is regarded as a strong evidence for the two-pole structure of the D-0(*)( 2400). With the physical quark masses, the poles are located at (2105(-8)(+6) - i102(-12)(+10)) MeV and (2451(-26)(+36) - i134(-8)(+7)) MeV, with the largest couplings to the D pi and D-s (K) over bar channels, respectively. Since the higher pole is close to the D-s (K) over bar threshold, we expect it to show up as a threshold enhancement in the D-s (K) over bar invariant mass distribution. This could be checked by high-statistic data in future experiments. We also show that the lower pole belongs to the same SU(3) multiplet as the D-s0(*)(2317) state. Predictions for partners in the bottom sector are also given. (C) 2017 Published by Elsevier B.V.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: QUARK MASS DEPENDENCE ;  CHIRAL DYNAMICS ;  HEAVY MESONS ;  FORM-FACTORS ;  LATTICE QCD ;  OPEN-CHARM ;  B-DECAYS ;  S MESONS ;  STATES ;  RESONANCES
项目资助者: Spanish MINECO [27-13-463B-731, BES-2015-072049] ;  ESF ;  European FEDER [FIS2014-51948-C2-1-P, FIS2014-57026-REDT, SEV-2014-0398] ;  Generalitat Valenciana [PROMETEOII/2014/0068] ;  DFG ;  NSFC [11621131001, 11647601] ;  DFG [TRR110] ;  CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ;  Thousand Talents Plan for Young Professionals
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22084
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Albaladejo, M,Fernandez-Soler, P,Guo, FK,et al. Two-pole structure of the D-0*(2400)[J]. PHYSICS LETTERS B,2017,767:465-469.
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