论文标题
ILC作为Susy Discovery和Precision工具
ILC as a SUSY discovery and precision instrument
论文作者
论文摘要
到目前为止，来自7、8和13 TEV的LHC的数据尚未证明超过125 GEV Higgs Boson的新颗粒。特别是没有Susy的迹象。但是，物理学与$ e^+e^ - $ collisions的互补性仍然提供了许多有趣的场景，可以在ILC发现Susy。这些方案利用了$ e^+e^ - $碰撞的能力，可以观察缺少四弹药的事件 - 在HADRON COLLIDERS上无法使用的签名，在这里只能观察到横向不平衡。由于背景较低和无触发操作，$ e^+e^ - $ colliders处的检测器可以观察到可见能量的事件远不如强子乘员在强子乘员处发生的事件。在这一贡献中，我们将介绍ILC在ILC概念上进行的详细模拟研究。这些研究包括模拟完整的SM背景以及现实的加速器条件。我们将在最具挑战性的SUSY频道（例如Higgsinos或Winos）上以低质量差异的形式显示出预期发现和排除范围的结果。在发现的情况下，还将对模型参数测量的精度进行评估。我们还报告了如何使用此类测量来对超出直接触及的sparticle-spectrum的一部分进行约束，并区分不同的Susy模型在高度上破裂。
Data from the LHC at 7, 8, and 13 TeV have so far yielded no evidence for new particles beyond the 125 GeV Higgs boson; in particular, there have been no signs of SUSY. However, the complementary nature of physics with $e^+e^-$ collisions still offers many interesting scenarios in which SUSY can be discovered at the ILC. These scenarios take advantage of the capability of $e^+e^-$ collisions to observe events with missing four-momentum -- a signature not available at hadron colliders, where only transverse imbalance is observable. Due to low backgrounds and trigger-less operation, detectors at $e^+e^-$ colliders can observe events with much less visible energy than what is possible at hadron colliders. In this contribution, we will present detailed simulation studies done with the ILD concept at the ILC. These studies include simulation of the full SM background, as well as realistic accelerator conditions. We will show results both on expected discovery and exclusion reaches for the most challenging SUSY channels, such as higgsinos or winos at low mass differences. Evaluations of precision of model-parameter measurements, in case of discovery, will also be given. We also report on how such measurements can be used to put constraints on parts of the sparticle-spectrum beyond direct reach, and to discriminate between different models of SUSY breaking at high scales.
