结合ATOMKI X17反常现象的Υ(1S)辐射衰变与达利兹衰变
Radiative and Dalitz decays of $Υ(1S)$ in the light of the ATOMKI X17 anomaly
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中文总结 AI 辅助
该研究在协变禁闭夸克模型框架下,计算了Υ(1S)的辐射衰变与达利兹衰变的标准模型预言,并探究了假想的ATOMKI X17矢量玻色子对达利兹衰变道的贡献。
中文摘要 AI 辅助
我们在协变禁闭夸克模型框架下研究了Υ(1S)→η_bγ的辐射衰变与Υ(1S)→η_b e⁺e⁻的达利兹衰变,给出了强子形状因子、辐射衰变常数及衰变分支比的理论预言。在标准模型框架内,我们预言Γ(Υ(1S)→η_bγ)=9.3(9) eV,Γ(Υ(1S)→η_b e⁺e⁻)=4.8(5)×10⁻² eV,同时也探究了假想的ATOMKI X17矢量玻色子对达利兹衰变道的贡献。
英文摘要
We study the radiative decay $Υ(1S)\to η_bγ$ and the Dalitz decay $Υ(1S)\to η_b e^+ e^-$ within the framework of the Covariant Confined Quark Model. We provide theoretical predictions for the hadronic form factor, the radiative decay constant, and the decay branching fractions. Within the Standard Model we predict $Γ(Υ(1S)\toη_b γ) = 9.3(9)\, \textrm{eV}$ and $Γ(Υ(1S)\toη_b e^+ e^-) = 4.8(5)\times 10^{-2}\, \textrm{eV}$. The contribution of the hypothetical ATOMKI $X17$ vector boson to the Dalitz channel is also investigated.
发表机构
- HCMC University of Technology and Engineering(胡志明市技术工程大学)
- Joint Institute for Nuclear Research(苏联联合核研究所)
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