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Lin, YH; Shen, CW; Guo, FK; Zou, BS; Zou, BS (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Decay behaviors of the P-c hadronic molecules
发表期刊PHYSICAL REVIEW D
语种英语
摘要The P-c(4380) and P-c(4450) states observed recently by the LHCb experiment were proposed to be either (D) over bar Sigma*(c) or (D) over bar*Sigma(c) bound states. We analyze the decay behaviors of two such types of hadronic molecules within the effective Lagrangian framework. With branching ratios of ten possible decay channels calculated, it is found that the two types of hadronic molecules have distinguishable decay patterns. While the (D) over bar Sigma*(c) molecule decays dominantly to the (D) over bar *A(c) channel with a branching ratio by 2 orders of magnitude larger than to (D) over barA(c), the (D) over bar*Sigma(c) molecule decays to these two channels with a difference of less than a factor of 2. Our results show that the total decay width of P-c(4380) as the spin-parity-3-/2 (D) over bar Sigma*(c) molecule is about a factor of 2 larger than the corresponding value for the (D) over bar*Sigma(c) molecule. It suggests that the assignment of the (D) over bar*Sigma(c) molecule for P-c(4380) is more favorable than the (D) over bar*Sigma(c) molecule. In addition, P-c(4450) seems to be a (D) over bar*Sigma(c) molecule with J(P) = 5+/2 in our scheme. Based on these partial decay widths of the P-c states, we estimate the cross sections for the reactions gamma p -> J/Psi p and pi p -> J/Psi p rough the s-channel P-c states. The forthcoming gamma p experiment at JLAB and the pi p experiment at JPARC should be able to pin down the nature of these P-c states.
2017
卷号95期号:11页码:114017
学科领域Astronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.95.114017
项目资助者NSFC [11261130311, 11647601] ; NSFC [11261130311, 11647601] ; NSFC [11261130311, 11647601] ; NSFC [11261130311, 11647601] ; DFG [CRC110] ; DFG [CRC110] ; DFG [CRC110] ; DFG [CRC110] ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; Thousand Talents Plan for Young Professionals ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013] ; CAS Key Research Program of Frontier Sciences [QYZDB-SSW-SYS013]
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22029
专题理论物理所科研产出_SCI论文
通讯作者Lin, YH; Shen, CW; Guo, FK; Zou, BS (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Lin, YH,Shen, CW,Guo, FK,et al. Decay behaviors of the P-c hadronic molecules[J]. PHYSICAL REVIEW D,2017,95(11):114017.
APA Lin, YH,Shen, CW,Guo, FK,Zou, BS,&Zou, BS .(2017).Decay behaviors of the P-c hadronic molecules.PHYSICAL REVIEW D,95(11),114017.
MLA Lin, YH,et al."Decay behaviors of the P-c hadronic molecules".PHYSICAL REVIEW D 95.11(2017):114017.
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