论文标题
LHC Higgs耦合测量对SCNMSSM中性Higgs扇区的玻璃体衰变的影响
Impact of LHC Higgs couplings measurements on bosonic decays of the neutral Higgs sector in the scNMSSM
论文作者
论文摘要
我们在当前的理论和实验限制下分析了具有大统一边界条件的近临界超对称标准模型。我们计算模型的质谱，并专注于Higgs扇区中的三个最轻的粒子（两个CP-even标量，$ H_1，H_2 $和一个CP-ODD，$ A_1 $）。通过Gluon融合的横截面与光子和巨大的仪表减少了此类颗粒的耦合，单线双线分量，其分支比率以及横截面的横截面降低。我们的分析集中在参数空间上，在该空间中，$λ$的单线耦合$λ$尽可能大（保持扰动性绑定完整），以及上山型和下型higgses（$ \tanβ$）的真空期望值之间的比率是尽可能小的，这是代表自然案例的区域。我们显示了LHC最近的约束对玻色子和费米子对模型参数空间的影响以及对HIGGS部门的影响的影响。结果表明，尽管该模型仍然能够说明当前数据并为发现扩展的Higgs扇区提供了机会，但最近的LHC Higgs耦合耦合约束排除了参数空间的部分部分，其中$ H_2 $（非SM-SM Like）和$ a_1 $是非singlet，质量低于〜400 GEV。
We analyze the Next-to-minimal supersymmetric standard model with Grand unification boundary conditions under current theoretical and experimental constraints. We compute the mass spectrum of the model and focus on the three lightest particles in the Higgs sector (two CP-even scalars, $h_1, h_2$, and one CP-odd, $a_1$). The reduced couplings of such particles, singlet-doublet components, their branching ratios to bosons, and reduced cross-section to photons and massive gauge bosons via gluon fusion are thoroughly and systematically scrutinized. Our analysis is focused on the parameter space where the singlet-doublet coupling $λ$ is as large as possible (keeping the perturbativity bound intact) and the ratio between the vacuum expectation values of the up-type and down-type Higgses ($\tanβ$) is as small as possible, which is the region representing the most natural case of the NMSSM. We show the impact of recent constraints from the LHC on the SM-Higgs couplings to bosons and fermions on the parameter space of the model and the consequent implications on the Higgs sector. The results show that while the model is still able to account for current data and provide an opportunity for discovery of extended Higgs sectors, recent LHC Higgs couplings constraints rule-out parts of the parameter space where $h_2$ (non-SM-like) and $a_1$ are non-singlet with masses below ~400 GeV.
