Family symmetries and proton decay
Family symmetries and proton decay
复制标题
族对称性和质子衰变
DOI：
10.1016/0370-2693(94)90242-9
复制
发表时间：
1994
影响因子：
4.4
通讯作者：
D. Kaplan
中科院分区：
文献类型：
--
作者：
H. Murayama;D. Kaplan
质子衰变模式p→ K0 e+和p→K0μ+在某些超对称理论中可能是可见的，如果能看到，将为极短距离的新味物理提供证据。这些衰变模可以由五维算符（Q1Q1Q2L1，2）产生，其中Q1和L2分别是第i代夸克和轻子超场.这样一个运营商是不会产生在可观察的水平，由于规范或希格斯玻色子交换在一个最小的大统一理论。然而，在解释费米子质量等级的理论中，它可能是在普朗克尺度下产生的，其强度使得衰变p→K0+既与质子寿命相容，又在超级神冈可见。可观测的质子衰变甚至可以在没有统一的理论中发生。
The proton decay modes p→K0e+and p→K0μ+may be visible in certain supesymmetric theories, and if seen would provide evidence for new flavor physics at extremely short distances. These decay modes can arise from the dimension five operator (Q1Q1Q2L1,2), where Qiand Liare ithgeneration quark and lepton superfields respectively. Such an operator is not generated at observable levels due to gauge or Higgs boson exchange in a minimal GUT. However in theories that explain the fermion mass hierarchy, it may be generated at the Planck scale with a strength such that the decays p→K0ℓ+are both compatible with the proton lifetime and visible at Super-Kamiokande. Observable proton decay can even occur in theories without unification.