Branching fraction of $Ξ_{bc}^+\to Ξ_{c}^+ J/ψ$ in the final-state-interaction approach
The College of Materials and Physics, China University of mining and technology（中国矿业大学材料科学与工程学院）；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 Physics, Lanzhou University（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）；Center for High Energy Physics, Peking University（北京大学高能物理中心）；Frontiers Science Center for Rare Isotopes, and School of Nuclear Science and Technology, Lanzhou University（兰州大学稀有同位素前沿科学中心，核科学与技术学院）
The process of $Ξ_{bc}^{+}\to Ξ_{c}^{+}J/ψ$ is among the most favored modes for searching for bottom-charm baryons. However, its branching fraction has never been studied in theory. In this work, we investigate the branching fraction of $Ξ_{bc}^{+}\to Ξ_{c}^{+}J/ψ$ in the final-state-interaction approach, as it is dominated by the color-suppressed non-factorizable contributions. A similar process, $Λ_{b}^{0}\to Λ^0 J/ψ$, is used as a control mode to fix the model parameter. Consequently, the branching fraction of $Ξ_{bc}^{+}\to Ξ_{c}^{+}J/ψ$ is predicted to be $(1.55_{-0.42}^{+0.50})\times10^{-4}$. With the production rate of bottom-charm baryons and the detection efficiencies of the final states, it is expected for considerable signal events to observe $Ξ_{bc}^+$ in the near future.
Semileptonic decays $Λ_c^+ \to Λ\ell^+ ν_\ell\,\,(\ell=e,μ)$ in the covariant quark model and comparison with the new absolute branching fraction measurements of Belle and BESIII
Measurement of the H to ZZ branching fraction at 350 GeV and 3 TeV CLIC
在本文中，我们调查的前景，测量分支分数的标准模型希格斯玻色子衰变到一对$Z$玻色子在未来的紧凑型线性对撞机（CLIC）在350 GeV和3 TeV的质心能量。使用CLIC探测器的详细模拟进行研究，同时考虑到所有相关的物理和光束诱导的背景过程。结果表明，在质心能量为350 GeV（3 TeV）时，假设积分亮度为1 ab $^{-1}$（5 ab $^{-1}$），用半轻子末态可以测量出Higgs产生截面和分支分数BR的乘积（${H\rightarrow\thinspace ZZ^\ast}$），相对统计不确定度为20%（3.0%）.
