On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners

doi:10.3390/universe9020109

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	On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners
	Yan, Mao-Jun ; Dias, Jorgivan M. M.; Guevara, Adolfo ; Guo, Feng-Kun ; Zou, Bing-Song
刊名	UNIVERSE
	2023
卷号	9 期号:2 页码:109
关键词	EFFECTIVE CHIRAL LAGRANGIANS HYBRID MESONS RESONANCES SYMMETRY
DOI	10.3390/universe9020109
英文摘要	In this work, we interpret the newly observed eta(1)(1855) resonance with exotic J(PC) = 1(-+) quantum numbers in the I = 0 sector, reported by the BESIII Collaboration, as a dynamically generated state from the interaction between the lightest pseudoscalar mesons and axial-vector mesons. The interaction is derived from the lowest order chiral Lagrangian from which the Weinberg- Tomozawa term is obtained, describing the transition amplitudes among the relevant channels, which are then unitarized using the Bethe-Salpeter equation, according to the chiral unitary approach. We evaluate the eta(1)(1855) decays into the eta eta' and K (K) over barpi channels and find that the latter has a larger branching fraction. We also investigate its SU(3) partners, and according to our findings, the pi(1)(1400) and pi(1)(1600) structures may correspond to dynamically generated states, with the former one coupled mostly to the b1 pi component and the latter one coupled to the K-1(1270)(K) over bar channel. In particular, our result for the ratio gamma(pi(1)(1600) -> f(1)(1285) pi)/gamma (pi(1)(1600) ->eta'pi) is consistent with the measured value, which supports our interpretation for the higher pi(1) state. We also report two poles with a mass about 1.7 GeV in the I = 1/2 sector, which may be responsible for the K(1680). We suggest searching for two additional eta(1) exotic mesons with masses around 1.4 and 1.7 GeV. In particular, the predicted eta(1)(1700) is expected to have a width around 0.1 GeV and can decay easily into KK-pi pi.
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/311006/28039]
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.[Yan, Mao-Jun 2.Dias, Jorgivan M. M. 3.Guevara, Adolfo 4.Guo, Feng-Kun 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.[Guo, Feng-Kun 7.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 9.Beihang Univ, Peng Huanwu Collaborat Ctr Res & Educ, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Yan, Mao-Jun,Dias, Jorgivan M. M.,Guevara, Adolfo,et al. On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners[J]. UNIVERSE,2023,9(2):109.
APA	Yan, Mao-Jun,Dias, Jorgivan M. M.,Guevara, Adolfo,Guo, Feng-Kun,&Zou, Bing-Song.(2023).On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners.UNIVERSE,9(2),109.
MLA	Yan, Mao-Jun,et al."On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners".UNIVERSE 9.2(2023):109.