论文标题
HIGGS数据的Doublet左右对称模型的限制
Constraints on the Doublet Left-Right Symmetric Model from Higgs data
论文作者
论文摘要
我们研究了HIGGS数据引起的双重左右对称模型（DLRSM）的约束。该模型的$ SU（2）_l $对称性被三个真空期望值，$κ_1$，$κ__2$和$ v_l $打破。该模型的大多数研究都认为比率$ r =κ_2/κ__1$和$ W = v_l/κ_1$非常小。在这项工作中，我们研究了LHC的Higgs数据对$ r $ $ $ $ w $施加的约束。我们考虑了最一般的标量潜力，并计算出CP-even标量的质量以及这些标量最轻的标量与自身的耦合，以及$ w $和$ z $ gauge玻色子，以及第三代夸克。我们发现$ r $或$ w $上没有下限。将最轻的CP量表的质量等同于$ 125 $ GEV会导致上限$ W <6.7 $。要求将夸克与模型的Higgs Bidoublet的Yukawa耦合应为扰动产量，上限$ r <0.8 $ <0.8 $和$ W <3.5 $。底部夸克与最轻的CP-even标量的Yukawa耦合强烈不散发$ r，w <0.1 $的值，并显示出对$ w \ sim \ sim \ Mathcal {o}（O}（1）$的值的明显偏好。
We study the constraints on the doublet left-right symmetric model (DLRSM) arising due to the Higgs data. The $SU(2)_L$ symmetry of this model is broken by three vacuum expectation values, $κ_1$, $κ_2$, and $v_L$. Most studies of this model assume that the ratios $r = κ_2/κ_1$ and $w = v_L/κ_1$ are very small. In this work, we study the constraints imposed on $r$ and $w$ by the Higgs data from LHC. We consider the most general scalar potential and calculate the masses of the CP-even scalars and the couplings of the lightest of these scalars to itself, to $W$ and $Z$ gauge bosons, and to the third generation quarks. We find that there is no lower bound on either $r$ or $w$. Equating the mass of the lightest CP-even scalar to $125$ GeV leads to an upper limit $w < 6.7$. The requirement that the Yukawa coupling of the quarks to the Higgs bidoublet of the model should be perturbative yields the upper bounds $r < 0.8$ and $w < 3.5$. The Yukawa coupling of the bottom quark to the lightest CP-even scalar strongly disfavours value of $r, w < 0.1$ and shows a marked preference for values of $w \sim \mathcal{O}(1)$.
