论文标题
稀有超子衰减的探索性计算$σ^+ \ to p \ ell^+ \ ell^ - $的进度
Progress on the exploratory calculation of the rare Hyperon decay $Σ^+ \to p \ell^+ \ell^-$
论文作者
论文摘要
稀有的超子衰减$σ^+ \ to p \ ell^+ \ ell^ - $是$ s \ d $ s $ s to d $风味改变中性的当前过程，在标准模型中高度抑制，因此对新物理学敏感。由于该衰减的实验测量结果最近有所改善，因此还必须改进标准模型理论预测，以确定此通道中的任何新物理学。我们介绍了有关该衰变形式的长距离部分的第一个探索性晶格计算的最新进展。该试点计算是在340 MEV pion质量集合中使用域壁费米子作为RBC-UKQCD合作的一部分进行的。
The rare Hyperon decay $Σ^+ \to p \ell^+ \ell^-$ is an $s \to d$ flavour changing neutral current process, which is highly suppressed within the Standard Model, and is therefore sensitive to new physics. Due to recent improvements in experimental measurements of this decay, the Standard Model theory prediction must also be improved in order to identify any new physics in this channel. We present updates on our progress towards the first exploratory lattice calculation of the long-distance part of the form factors of this decay. This pilot calculation is performed on a 340 MeV pion mass ensemble using domain-wall fermions as part of the RBC-UKQCD collaboration.
