论文标题
DAS IST DER HAMMER：一致的半衰减的新物理解释
Das ist der HAMMER: Consistent new physics interpretations of semileptonic decays
论文作者
论文摘要
$ b \ tocτ\barν$衰减的精确测量需要大量资源密集的蒙特卡洛（MC）样品，其中包含了检测器响应和物理背景的详细模拟。提取的参数可能对MC生成中使用的基本理论模型高度敏感。由于新物理（NP）可以改变衰减分布和接受度，因此将NP Wilson系数拟合到基于SM的$ R（D^{（*）}）$比率的标准实践可能会偏差。新开发的Hammer软件工具使MC样本有效地重新加权可以任意NP方案或任何HADRONIC矩阵元素。我们演示了Hammer如何通过直接符合NP Wilson系数来避免偏见。我们还提出了示例分析，这些分析证明了较大的偏见，否则这些偏见可能是从基于SM的测量的幼稚NP解释中出现的。目前，Hammer库与几个现有的实验分析框架相连，我们概述了其结构。
Precise measurements of $b\to cτ\barν$ decays require large resource-intensive Monte Carlo (MC) samples, which incorporate detailed simulations of detector responses and physics backgrounds. Extracted parameters may be highly sensitive to the underlying theoretical models used in the MC generation. Because new physics (NP) can alter decay distributions and acceptances, the standard practice of fitting NP Wilson coefficients to SM-based measurements of the $R(D^{(*)})$ ratios can be biased. The newly developed HAMMER software tool enables efficient reweighting of MC samples to arbitrary NP scenarios or to any hadronic matrix elements. We demonstrate how HAMMER allows avoidance of biases through self-consistent fits directly to the NP Wilson coefficients. We also present example analyses that demonstrate the sizeable biases that can otherwise occur from naive NP interpretations of SM-based measurements. The HAMMER library is presently interfaced with several existing experimental analysis frameworks and we provide an overview of its structure.
