Dynamical mixing between 2(3)S(1) and 1(3)D(1) charmed mesons

doi:10.1103/PhysRevD.102.054013

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	Dynamical mixing between 2(3)S(1) and 1(3)D(1) charmed mesons
	Yu, Hao ; Zhao, Ze 1; Zhang, Ailin
刊名	PHYSICAL REVIEW D
	2020
卷号	102 期号:5 页码:54013
关键词	RELATIVIZED QUARK-MODEL HEAVY-LIGHT MESONS D-S DECAY ANNIHILATION
ISSN号	1550-7998
DOI	10.1103/PhysRevD.102.054013
英文摘要	In charmed D and D-s mesons sector, the matrix of a Hamiltonian in a quark potential model is computed in the 2(3)S(1) and 1(3)D(1) subspace. The masses of four mixed states of 2(3)S(1) and 1(3)D(1) denoted with D-1* (2635), D-1(2739), D-s1 (2715) and D-s1* (2805) are obtained. It is an off-diagonal part of the spin-orbit tensor interaction that causes the mixing between the 2(3)S(1) and 1(3)D(1) states. The mixing angles between the 2(3)S(1) and 1(3)D(1) states are tiny. Under the mixing, a(3)P(0) model is employed to compute the hadronic decay widths of all OZI-allowed decay channels of the four mixed states. The two light mixed states D-1(2635) and D-s(1)(2715) are close in mass to D-J(2600) and D-s1(2700), while the two heavy mixed states D-1(2739) and Di(s1)(2805) are lighter in mass than D(2750) and D-s1(2860). The mixing angles obtained from dynamical interaction are inconsistent with the mixing angles obtained from hadronic decay. Based on mass spectra and hadronic decay analyses, D-J(2600), D(2750), D-s1(2700), and D-s1(2860) are impossibly the mixed states of 2(3)S(1) and 1(3)D(1) at the small mixing angles. The inconsistence implies that D-1(2760) and D-s1(2860) have not been properly resolved from present experimental data, or there exist large unknown off-diagonal interactions that result in large mixing angles.
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/311006/27217]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hao,Zhao, Ze,Zhang, Ailin. Dynamical mixing between 2(3)S(1) and 1(3)D(1) charmed mesons[J]. PHYSICAL REVIEW D,2020,102(5):54013.
APA	Yu, Hao,Zhao, Ze,&Zhang, Ailin.(2020).Dynamical mixing between 2(3)S(1) and 1(3)D(1) charmed mesons.PHYSICAL REVIEW D,102(5),54013.
MLA	Yu, Hao,et al."Dynamical mixing between 2(3)S(1) and 1(3)D(1) charmed mesons".PHYSICAL REVIEW D 102.5(2020):54013.