On the η1(1855), π1(1400) and π1(1600) as Dynamically Generated States and Their SU(3) Partners
文献类型:期刊论文
作者 | Yan, Mao-Jun; Dias, Jorgivan M. M.; Guevara, Adolfo; Guo, Feng-Kun; Zou, Bing-Song |
刊名 | UNIVERSE |
出版日期 | 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 bar*pi 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 |
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. |
入库方式: OAI收割
来源:理论物理研究所
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