论文标题
用大统一理论解释SM风味结构
Explaining the SM flavor structure with grand unified theories
论文作者
论文摘要
我们不知道为什么在标准模型（SM）中有三个费米族家族，也无法解释观察到的费米昂质量和混合角度的模式。基于SU（5）和SO（10）组的标准大统一理论未能阐明此问题，因为它们还包含了扩大规组的三副Fermion表示副本。但是，这并不需要这样：标准模型家族可能会在大统一模型的不同表示上分发，在这种情况下，规格对称本身可能会歧视各个家庭，并（至少部分地）解释风味难题。这个想法的最雄心勃勃的版本是将所有SM费用嵌入量规组的单个不可还原表示中。
We do not know why there are three fermion families in the Standard Model (SM), nor can we explain the observed pattern of fermion masses and mixing angles. Standard grand unified theories based on the SU(5) and SO(10) groups fail to shed light on this issue, since they also contain three copies of fermion representations of an enlarged gauge group. However, it does not need to be so: the Standard Model families might be distributed over distinct representations of a grand unified model, in which case the gauge symmetry itself might discriminate the various families and explain (at least partially) the flavor puzzle. The most ambitious version of this idea consists on embedding all SM fermions in a single irreducible representation of the gauge group.
