论文标题
$μ\对$ $过程的灵敏度对$τ$变化
The sensitivity of $μ\to e$ processes to $τ$ flavour change
论文作者
论文摘要
将$μ$转换为$τ$，然后将$τ$转换为$ e $，导致$μ\ to $ $。 In an EFT framework, we explore the sensitivity of $μ\to e$ observables to products of $(μ\to τ)\times (τ\to e)$ interactions, and show that the exceptional sensitivity of upcoming $μ\to e$ experiments could allow to probe parameter space beyond the reach of upcoming $τ\to l$ searches in Higgs, $τ$ and $B$腐烂。我们将$τ\ to L $交互作用描述为SM eft中的六个操作员，确定它们对$μ\ to e $过程的有趣贡献，并获取将这些对八个$μ\ to e e $运算符的异常尺寸混合到e $ operators的异常尺寸。我们发现，$μ\ to e $流程对$τ$改变了$τ$改变$ b $ b $的衰减，价格可与当前的$ b $异常相当，但不能降低利率 - 在许多当前$ b $异常中适用 - 因为它们不会干扰SM。
Transforming a $μ$ to a $τ$, then the $τ$ to to an $e$, results in $μ\to e$. In an EFT framework, we explore the sensitivity of $μ\to e$ observables to products of $(μ\to τ)\times (τ\to e)$ interactions, and show that the exceptional sensitivity of upcoming $μ\to e$ experiments could allow to probe parameter space beyond the reach of upcoming $τ\to l$ searches in Higgs, $τ$ and $B$ decays. We describe the $τ\to l$ interactions as dimension six operators in the SM EFT, identify pairs of them giving interesting contributions to $μ\to e$ processes, and obtain the anomalous dimensions mixing those pairs into dimension eight $μ\to e$ operators. We find that $μ\to e$ processes are sensitive to $τ$ flavour-changing $B$ decays at rates comparable to current $B$ anomalies, but cannot reduce rates -- as appropriate in many current $B$ anomalies -- because they do not interfere with the SM.
