论文标题
redtop实验：稀有$η/η^{\ prime} $衰减以探测新物理
The REDTOP experiment: Rare $η/η^{\prime}$ Decays To Probe New Physics
论文作者
论文摘要
$η$和$η^{\ prime} $介子在粒子宇宙中几乎是独一无二的，因为它们几乎是金石玻色子，并且衰减的动态受到了强烈的限制。在早期实验中收集的集成$η$ -Meson样品相当于$ \ sim10^{9} $事件。正在提出了一个新的实验Redtop（稀有的ETA腐烂探测新的物理学），目的是收集订单10 $^{14} $ $ $ $ $ h $（10 $^{12} $η^{\ prime} $的数据样本，以研究非常罕见的衰变。这样的统计数据足以调查几种对称性违规行为，并搜索超出标准模型的粒子和字段。在这项工作中，我们介绍了几项研究，评估了对标准模型将标准模型与新物理学相结合的过程的敏感性通过所有四个所谓的\ emph {portals}的敏感性：矢量，标量，轴，轴，轴心和沉重的Lepton Portal。该实验的敏感性也足以探索几种保护法，尤其是$ cp $，$ t $和Lepton普遍性，以及确定$η$形式的进攻，这对于解释最近测量MUON $ G-2 $至关重要。
The $η$ and $η^{\prime}$ mesons are nearly unique in the particle universe since they are almost Goldstone bosons and the dynamics of their decays are strongly constrained. The integrated $η$-meson samples collected in earlier experiments amount to $\sim10^{9}$ events. A new experiment, REDTOP (Rare Eta Decays To Probe New Physics), is being proposed, with the intent of collecting a data sample of order 10$^{14}$ $η$ (10$^{12}$ $η^{\prime}$) for studying very rare decays. Such statistics are sufficient for investigating several symmetry violations, and for searching for particles and fields beyond the Standard Model. In this work we present several studies evaluating REDTOP sensitivity to processes that couple the Standard Model to New Physics through all four of the so-called \emph{portals}: the Vector, the Scalar, the Axion and the Heavy Lepton portal. The sensitivity of the experiment is also adequate for probing several conservation laws, in particular $CP$, $T$ and Lepton Universality, and for the determination of the $η$ form factors, which is crucial for the interpretation of the recent measurement of muon $g-2$.
