arXiv 1301.40142013-01hep-phhep-ex

$0^{++}$和$1^{+-}$重介子的辐射衰变

The radiative decays of $0^{++}$ and $1^{+-}$ heavy mesons

Hong-Wei Ke, Xue-Qian Li, Yan-Liang Shi

备注：: 10 pages, 1 figure, Accepted by PRD
发表信息：: Phys.Rev. D87 (2013) 5, 054022
DOI：: 10.1103/PhysRevD.87.054022

摘要：

辐射衰变被认为是研究新观察到的共振的强子结构的理想实验室，因为反应仅受电磁相互作用（树水平）的控制。然而，为了得到正确的理论值，必须正确处理波函数和强子化中的非微扰QCD效应。本文导出了轻前夸克模型（LFQM）中$0^{++}$和$1^{-+}$重介子的辐射衰变公式。因为$\mathcal{B}(χ_{c0}\rightarrow J/ψγ)$是很好的测量，理论上的评估的过渡率可以用来测试我们的方法。在这个理论框架内，$χ_{b0}\rightarrow Υ(1S)γ$的宽度进行了评估。这些公式可用于通过过程$h_c\rightarrow η_cγ$、$h_b\rightarrow η_bγ$和$D_s(2317)\rightarrow D_s^*+γ$确定新共振态的内部结构，例如$h_{c(b)}$的同位旋和$D_s(2317)$的结构。

英文摘要：

The radiative decay is believed to be an ideal lab to study hadronic structure of newly observed resonances because the reactions are governed by only the electromagnetic interaction (tree level). However, to obtain correct theoretical values, one has to properly deal with the non-perturbative QCD effects in the wavefunction and hadronization. In this work we derive the formulas for the radiative decays of $0^{++}$ and $1^{-+}$ heavy mesons in the light front quark model (LFQM). Because $\mathcal{B}(χ_{c0}\rightarrow J/ψγ)$ is well measured, the theoretical evaluation of the transition rate can be used to test our approach. Within this theoretical framework, the width of $χ_{b0}\rightarrow Υ(1S)γ$ is evaluated. The formulas can be applied to identify the inner structures of new resonances, for example the isospin of $h_{c(b)}$ and the structure of $D_s(2317)$, via processes $h_c\rightarrow η_cγ$, $h_b\rightarrow η_bγ$ and $D_s(2317)\rightarrow D_s^*+γ$.

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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