标题： CKM $γ$ 测量在LHCb中 显示英文标题

标题： CKM $γ$ measurements at LHCb

摘要： 树级测量CKM $\gamma$ 角是标准模型（SM）中 $CP$ 违反的重要测试。 直接测量（树级衰变）和间接测量（环状衰变）之间的差异可能表明超出标准模型的物理现象。 最近使用诸如 $B^0 \rightarrow DK^{*0}, B^{\pm} \rightarrow [D\pi^0/\gamma]_{D^*}h^{\pm}$ 的衰变（其中 $D$ 衰变为 $K_{S}^{0} h^+h^-$ ，带有 $h=K, \pi$）和 $B^{\pm} \rightarrow [h'^+h'^-\pi^+\pi^-]_Dh^{\pm}$ 的测量结果已被提出。 此外，还展示了LHCb之前对$\gamma$的测量结果，不包括上述结果。 LHCb的结果，精度为$(63.8^{+3.5}_{-3.7})^{\circ}$，在该领域中成为主导性测量结果。 显示英文摘要

摘要： The tree-level measurement of the CKM $\gamma$ angle is a crucial test of $CP$ violation in the Standard Model (SM). Discrepancies between direct measurements (tree-level decays) and indirect measurements (loop decays) could indicate physics beyond the SM. Recent measurements using decays such as $B^0 \rightarrow DK^{*0}, B^{\pm} \rightarrow [D\pi^0/\gamma]_{D^*}h^{\pm}$ (where $D$ decays to $K_{S}^{0} h^+h^-$ with $h=K, \pi$) and $B^{\pm} \rightarrow [h'^+h'^-\pi^+\pi^-]_Dh^{\pm}$ are presented. Additionally, the combination of previous $\gamma$ measurements at LHCb, excluding the aforementioned results, is also presented. The LHCb result, with a precision of $(63.8^{+3.5}_{-3.7})^{\circ}$ establishes itself as a dominant measurement in this field.