40th International Conference on High Energy physics - ICHEP2020. Talk given on behalf of the generator group (LCGG) of the Linear Collider Collaboration (LCC)
Future linear $e^+e^-$ colliders aim for extremely high precision measurements. To achieve this, not only excellent detectors and well controlled machine conditions are needed, but also the best possible estimate of backgrounds. To avoid that lacking channels and too low statistics becomes a major source of systematic errors in data-MC comparisons, all SM channels with the potential to yield at least a few events under the full lifetime of the projects need to be generated, with statistics largely exceeding that of the real data. Also machine conditions need to be accurately taken into account. This includes beam-polarisation, interactions due to the photons inevitably present in the highly focused beams, and coherent interactions of whole bunches. This endeavour has already been partly achieved in preparing design documents for both the ILC and CLIC: Comprehensive samples of fully simulated and reconstructed events are available for use. In this contribution, we present how the generation of physics events at linear colliders is categorised and organised, and the tools used. Also covered is how different aspects of machine conditions, different sources of spurious interactions (such as beam-induced backgrounds) are treated and the tools involved for these aspects.
SPD - the Spin Physics Project with Polarized Proton and Deuteron Beams at the NICA Collider
在JINR（俄罗斯杜布纳）未来的NICA对撞机上进行的SPD实验旨在研究纵向和横向极化质子和氘核碰撞中的核子自旋结构和极化现象，其能量为$\sqrt{s}$至27 GeV，亮度为10 $^{32}$ cm $^{-2}$ s $^{-1}$。测量Drell-Yan对、粲偶素和瞬发光子产生中的不对称性可以提供一个获得核子中全套领先扭曲TMD PDF的途径。实验装置计划作为一个通用的4 $π$探测器的广泛的物理任务。
The Intrinsic Dimension of Collider Events and Model-Independent Searches in 100 Dimensions
Universit\'e Paris-Saclay（巴黎萨克雷大学）；Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité（巴黎高等师范学校物理实验室）；Department of Physics, University of Basel（巴塞尔大学物理系）
Measuring Anomalous Couplings in H->WW* Decays at the International Linear Collider
测量希格斯玻色子与W玻色子的耦合是对我们理解电弱对称性破缺机制的一个重要检验。利用ZH -> nu nu WW* -> nu nu 4j事例研究了国际直线对撞机（ILC）对HW+W-反常耦合的敏感性。利用有效的拉格朗日方法，我们计算了希格斯玻色子的微分衰变率，包括新的5维算子的影响。我们提出了一个蒙特卡罗模拟的事件在ILC，使用一个完整的检测器模拟的基础上geant 4和一个真正的事件重建链。预期的异常耦合的约束条件。
Differentiable Full Detector Simulation of a Projective Dual-Readout Crystal Electromagnetic Calorimeter with Longitudinal Segmentation and Precision Timing
