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arXiv 2510.13623hep-ph
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$Ω(2012)$的辐射衰变作为有核分子

Radiative decays of the $Ω(2012)$ as a hadronic molecule

State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences(中国科学院近代物理研究所重离子科学和技术国家重点实验室);School of Physical Science and Technology, Lanzhou University(兰州大学物理科学与技术学院);School of Nuclear Sciences and Technology, University of Chinese Academy of Sciences(中国科学院大学核科学与技术学院);School of Physics, Beihang University(北京航空航天大学物理学院);Sino-French Carbon Neutrality Research Center, Ecole Centrale de Pekin/School of General Engineering, Beihang University(北京航空航天大学中法碳中和研究中心/工程师学院);Peng Huanwu Collaborative Center for Research and Education, International Institute for Interdisciplinary and Frontiers, Beihang University(北京航空航天大学鹏程交叉前沿研究院彭桓武科教协同中心);Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University(北京航空航天大学先进核材料物理北京市重点实验室);Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences(中国科学院近代物理研究所南方核科学理论中心);Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MoE, Gansu Provincial Research Center for Basic Disciplines of Quantum Physi(兰州大学理论物理中心甘肃省理论物理重点实验室教育部量子理论与应用重点实验室甘肃省量子物理基础学科研究中心)

Qing-Hua Shen, Jun-Xu Lu, Li-Sheng Geng, Xiang Liu, Ju-Jun Xie

AI总结:

本文通过三角环机制研究$Ω(2012)$的辐射衰变,揭示其作为有核分子的性质,并预测其衰变宽度为13.2±4.5 KeV。

摘要:

我们对$Ω(2012)$的辐射衰变过程$Ω(2012)→γΩ$进行了理论研究,其中具有自旋奇偶性$J^P=\ rac{3}{2}^-$的$Ω(2012)$共振态被视作由$\ar{K}Ξ(1530)$和$ηΩ$在$S$波和$\ar{K}Ξ$在$D$波中动态生成的状态。通过三角环机制计算了$Ω(2012)$的辐射衰变宽度,其中$Ω(2012)$耦合到$\ar{K}Ξ(1530)$通道。随后,$Ξ(1530)$和$\ar{K}$通过$Ξ$重子的交换转变为光子和$Ω$。我们的计算得出$Ω(2012)$的辐射衰变宽度为$13.2^{+4.5}_{-3.9}$ KeV,不确定性来源于模型参数。这一结果为$Ω(2012)$共振态的性质及其衰变动力学提供了有价值的见解。预计本文所呈现的计算结果可能通过未来的实验验证,这将为研究仍神秘的$Ω(2012)$性质打开新的大门。

英文摘要:

We present a theoretical investigation of the radiative decay process $Ω(2012) \to γΩ$, where the $Ω(2012)$ resonance with spin-parity $J^P=\frac{3}{2}^-$, is treated as a dynamically generated state from $\bar{K}Ξ(1530)$ and $ηΩ$ in $s$-wave and $\bar{K}Ξ$ in $d$-wave. The radiative decay width of the $Ω(2012)$ is calculated using a triangular loop mechanism, where the $Ω(2012)$ couples to the $\bar{K} Ξ(1530)$ channel. Subsequently, the final state interactions between $Ξ(1530)$ and $\bar{K}$ transition to a photon and $Ω$ through the exchange of a $Ξ$ baryon. Our calculations yield a radiative decay width of $13.2 ^{+4.5}_{-3.9}$ KeV, with uncertainties arising from the model parameters. This result provides valuable insights into the nature of the $Ω(2012)$ resonance and its decay dynamics. It is expected that the calculations presented here could be verified by future experiments, which would open a new door for studying the still elusive nature of the $Ω(2012)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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