论文标题
逼真的（10）肠道中的颜色六分量标量
Spectrum of colour sextet scalars in realistic SO(10) GUT
论文作者
论文摘要
将标准模型Yukawa相互作用纳入大统一理论（GUT）通常会预测新标量的各种，这些标量与费米子融为一体并导致一些新颖的观察效应。我们评估了基于$（10）$ ut的现实性重量化模型中的颜色六分值diquark标量的可能性。 The spectrum consists of five sextets: $Σ\sim (6,1,-\frac{2}{3})$, $S \sim (6,1,\frac{1}{3})$, $\overline{S}\sim(\overline{6},1,-\frac{1}{3})$, ${\cal s} \ sim（6,1，\ frac {4} {3}）$和$ \ mathbb {s} \ sim（\ overline {6}，3， - \ frac {1} {3} {3}）$。我们将其与夸克的耦合明确计算，我们评估了它们对中性介子 - 抗元素混合和诸如中子 - 抗抗剂振荡（中心抗抗化过程）的贡献。后者之所以出现，是由于六折线之间违反了三联耦合，这也有助于某些四分之一的耦合和同一相同的扰动性，从而导致六重量的群众限制很大。使用现实模型中允许的$ b-l $打破量表和Yukawa耦合的值，我们对这些标量的质量产生了约束。发现$σ$以及其余的任何六重奏都不能同时比$ b-l $ breaking量表轻。在现实模型的领域中，这意味着在不久的将来的实验中没有可观察到的$ n $ - $ \ bar {n} $振荡。我们还指出了一个可能性的可能性，其中其他约束允许的一对$ s $可以通过观察到的宇宙的重子不对称。
Incorporation of the standard model Yukawa interactions in a grand unified theory (GUT) often predicts varieties of new scalars that couple to the fermions and lead to some novel observational effects. We assess such a possibility for the colour sextet diquark scalars within the realistic renormalizable models based on $SO(10)$ GUT. The spectrum consists of five sextets: $Σ\sim (6,1,-\frac{2}{3})$, $S \sim (6,1,\frac{1}{3})$, $\overline{S}\sim(\overline{6},1,-\frac{1}{3})$, ${\cal S}\sim(6,1,\frac{4}{3})$ and $\mathbb{S}\sim(\overline{6},3,-\frac{1}{3})$. Computing explicitly their couplings with the quarks, we evaluate their contributions to the neutral meson-antimeson mixing and baryon number-violating processes like neutron-antineutron oscillation. The latter arises because of a $B-L$ violating trilinear coupling between the sextets which also contributes to some of the quartic couplings and perturbativity of the same leads to strong limits on the sextet masses. Using the values of the $B-L$ breaking scale and Yukawa couplings permitted in the realistic models, we derive constraints on the masses of these scalars. It is found that $Σ$ along with any of the remaining sextets cannot be lighter than the $B-L$ breaking scale, simultaneously. In the realm of realistic models, this implies no observable $n$-$\bar{n}$ oscillation in near future experiments. We also point out a possibility in which sub-GUT scale $Σ$ and a pair of $S$, allowed by the other constraints, can viably produce the observed baryon asymmetry of the universe.
