论文标题
探测Lepton数字违反了稀有Kaon衰变的相互作用
Probing lepton number violating interactions in rare kaon decays
论文作者
论文摘要
我们调查了在稀有的kaon decay $ k \toπνν$中探测Lepton数字（LNV）操作员的可能性。仅使用光主动群中微子进行标准模型有效场理论进行分析，我们确定了BNL过去E949实验的相应LNV物理量表的当前限制以及J-Parc的Cern和Koto的当前操作实验。我们专注于$ k \toπνν$的标量电流的特定特征，并由操作员的LNV性质产生，并研究对实验灵敏度的影响，强调需要对超越SM电流的专门搜索进行专门搜索。我们发现，与中微子双β衰减相比，稀有的kaon腐烂探测器高算子尺度$λ_\ text {lnv} \约15美元至$ 20 $ tev。此外，我们评论说，KAON衰变中LNV的观察可以使高规模的瘦素发生在张力下。最后，我们与辐射产生的中微子肿块进行了讨论，并展示了如何在最小的紫外线完整场景中逃避严重的约束，以leptoquarks的身份进行。
We investigate the possibility to probe lepton number violating (LNV) operators in the rare kaon decay $K\toπνν$. Performing the analysis in the Standard Model effective field theory with only light active Majorana neutrinos, we determine the current limits on the corresponding LNV physics scale from the past E949 experiment at BNL as well as the currently operating experiments NA62 at CERN and KOTO at J-PARC. We focus on the specific signature of scalar currents in $K\toπνν$ arising from the LNV nature of the operators and study the effect on the experimental sensitivity, stressing the need for dedicated searches for beyond the SM currents. We find that the rare kaon decays probe high operator scales $Λ_\text{LNV} \approx 15$ to $20$ TeV in different quark and neutrino flavours compared to neutrinoless double beta decay. Furthermore, we comment that the observation of LNV in kaon decays can put high-scale leptogenesis under tension. Finally, we discuss the connection with small radiatively generated neutrino masses and show how the severe constraints therefrom can be evaded in a minimal ultraviolet-complete scenario featuring leptoquarks.
