New insights into the D-s0*(2317) and other charm scalar mesons

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	*New insights into the D-s0(2317) and other charm scalar mesons**
	Guo, ZH; Meissner, UG; Yao, DL
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:9 页码:94008
通讯作者	Guo, ZH (reprint author), Hebei Normal Univ, Dept Phys, Shijiazhuang 050024, Peoples R China.
英文摘要	Through the scattering of light-pseudoscalar mesons (pi, K,eta,eta') off charmed mesons (D, D-s), we study the D-s0(2317) state and other relevant charm scalar mesons in a unitarized chiral effective field theory approach. We investigate the charm scalar meson poles with different strangeness (S) and isospin (I) quantum numbers as well as their corresponding residues, which provide the coupling strengths of the charm scalar mesons. Both the light-quark mass and NC dependences of the pole positions of the D-s0(2317) and the poles with (S,I) = (0,1/2) are analyzed in detail in this work. Interestingly we observe quite similar pion mass trajectories for the resonance pole at around 2.1 GeV with (S,I) = (0; 1/2) to thoseof the f(0)(500) given in the literature. When increasing the values of NC we find that a bound state and a virtual state in the (S,I) = (1,0) channel asymmetrically approach the DK threshold for N-C < 6, and they meet at this threshold at N-C > 6. When N-C > 6, the bound and virtual states move into the complex plane on the second Riemann sheet and become a symmetric pair of resonance poles. For large enough values of N-C, neither the D-s0*(2317) pole nor the poles with (S,I) = (0,1/2) tend to fall down to the real axis, indicating that they do not behave like a standard quark-antiquark meson at large N-C.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	CHIRAL PERTURBATION-THEORY ; LARGE-N-C ; HEAVY MESONS ; RESONANCES ; QUARK ; U(1) ; DEPENDENCE ; EXPANSION ; SYMMETRY ; DYNAMICS
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20800]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Guo, ZH,Meissner, UG,Yao, DL. New insights into the D-s0*(2317) and other charm scalar mesons[J]. PHYSICAL REVIEW D,2015,92(9):94008.
APA	Guo, ZH,Meissner, UG,&Yao, DL.(2015).New insights into the D-s0*(2317) and other charm scalar mesons.PHYSICAL REVIEW D,92(9),94008.
MLA	Guo, ZH,et al."New insights into the D-s0*(2317) and other charm scalar mesons".PHYSICAL REVIEW D 92.9(2015):94008.