Two-pole structure of the D-0*(2400)

doi:http://dx.doi.org/10.1016/j.physletb.2017.02.036

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	*Two-pole structure of the D-0(2400)**
	Albaladejo, M; Fernandez-Soler, P; Guo, FK; Nieves, J; 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.
刊名	PHYSICS LETTERS B
	2017
卷号	767 页码:465-469
DOI	http://dx.doi.org/10.1016/j.physletb.2017.02.036
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.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22084]
专题	理论物理研究所_理论物理所1978-2010年知识产出
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.
推荐引用方式 GB/T 7714	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.
APA	Albaladejo, M,Fernandez-Soler, P,Guo, FK,Nieves, J,Guo, FK ,&Guo, FK .(2017).Two-pole structure of the D-0*(2400).PHYSICS LETTERS B,767,465-469.
MLA	Albaladejo, M,et al."Two-pole structure of the D-0*(2400)".PHYSICS LETTERS B 767(2017):465-469.