论文标题
超级实力的新解决方案：LHC的现象学研究
New solutions in supergravity: A phenomenological study at the LHC
论文作者
论文摘要
超对称性和超级重力通过在费米子和玻色子之间引入新的对称性来扩展标准模型。实验数据暗示必须打破超级重力。在超对称破裂的几种机制中，重力介导的超对称性破裂至关重要。这些机制具有产生所谓的软Susy破坏术语的主要特征。最近，已经确定了新的解决方案，从而导致通常的软性破坏术语以及其他硬性术语。这些新的解决方案的特征是新的单线手性超级场地具有非标准的行为。 沿着这些新解决方案的线路，确定了两个具有两个单元字段的模型：一个导致硬破坏术语称为S2MMSSM，另一个只有一个称为N2MMSSM的软性破坏术语。在S2MMSSM中，我们通过辐射校正研究了硬破坏术语对希格斯玻色子质量的影响。研究了N2MMSSM和NMSSM之间通过电子量表的微调进行比较。 我们还对MSSM的LHC进行了长期的停止squark签名的分析，并具有仪表介导的超对称性断裂。
Supersymmetry and supergravity extend the standard model by introducing a new symmetry between fermions and bosons. Experimental data imply that supergravity must be broken. Among several mechanisms of supersymmetry breaking, gravity mediated supersymmetry breaking is central in this thesis. These mechanisms have the main feature to generate the so-called soft SUSY breaking terms. Recently, new solutions have been identified, leading to the usual soft breaking terms together with additional hard breaking terms. These new solutions are characterized by a new singlet chiral superfield with a non-standard behaviour. Along the line of these new solutions, two models with two singlet fields were identified: one leading to hard breaking terms called S2MSSM and one with only soft breaking terms called N2MSSM. In the S2MSSM, we study the effects of the hard breaking terms on the Higgs boson mass through radiative corrections. A comparison between the N2MSSM and the NMSSM through the fine-tuning of the electroweak scale is investigated. We also perform an analysis of a long-lived stop squark signature at the LHC in the MSSM with Gauge Mediated Supersymmetry Breaking.
