论文标题
Ditauonium光谱学
Ditauonium spectroscopy
论文作者
论文摘要
我们研究了ditauonium的性质，ditauonium是一种外来原子，该原子由一对相反的$τ$ lept子组成，由量子性量子（QED）相互作用结合在一起。计算了矫形状态和para-ditauonium状态的能量水平，衰减模式和相关的部分宽度以及总宽度和寿命。高阶QED效应 - 包括羔羊换档，超精细分裂结构和部分衰减宽度校正 - 最多可至大约近代到接头阶（NNLO）精度。除了主要的双hot子和差异衰减之外，还确定了稀有衰减通道的速率，包括达利兹，辐射，三个photon，Double-dalitz，Four-dermion和Neutminos最终状态。
We examine the properties of ditauonium, an exotic atom consisting of a pair of opposite-sign $τ$ leptons bound together by the quantum electrodynamics (QED) interaction in a hydrogen-like state. The energy levels, decay modes and associated partial widths, as well as total widths and lifetimes of the ortho- and para-ditauonium states are calculated. Higher-order QED effects -- including Lamb shifts, hyperfine splitting structure, and partial decay widths corrections -- are incorporated up to approximately next-to-next-to-leading-order (NNLO) accuracy. Beyond the dominant diphoton and difermion decays, the rates of rare decay channels -- including Dalitz, radiative, triple-photon, double-Dalitz, four-fermion, and neutrinos final states -- are determined.
