论文标题
部分可观测时空混沌系统的无模型预测
Charm lifetime measurements at Belle II
论文作者
论文摘要
在Belle II实验和SuperKekB不对称的电子脉冲对撞机上升级，可实现粒子衰变的精确测量。即使有了早期数据，Belle II还是对粒子寿命进行了几项世界领先的测量，这些测量是用于用于搜索标准模型以外的物理学的有效模型的测试。特别是对于魅力哈登（Hadron），这些有效的模型取决于仔细考虑非扰动效应，以对生命进行充分描述。其他实验的最新测量值激发了对魅力重子的特别兴趣，其中包括表明寿命层次结构的几项测量值与曾经想象的不同。 Belle II的$ D^+$，$ D^0 $和$λ_C^+$ lifetimes的测量与以前的测量相一致，但具有提高的精度。这些测量值将改善世界平均值，为有效模型提供精致的测试，并作为未来测量的基准。
Upgrades at the Belle II experiment and the SuperKEKB asymmetric-energy electron-positron collider enable precise measurements of particle decays. Even with early data, Belle II has made several world-leading measurements of particle lifetimes, which are useful as tests of effective models used in searches for physics beyond the standard model. Especially for charm hadrons, these effective models depend on careful consideration of non-perturbative effects to give an adequate description of lifetimes. Recent measurements at other experiments have stimulated particular interest in charm baryons, including several measurements that indicate the hierarchy of lifetimes is different than once believed. The measurements of the $D^+$, $D^0$, and $Λ_c^+$ lifetimes at Belle II are consistent with previous measurements, but with improved precision. These measurements will improve the world-average values, provide refined tests for effective models, and serve as benchmarks for future measurements.
