AI 中文总结
研究大型强子对撞机对共振重自旋-2粒子的限制，重点是引力子塔。通过更新单引力子搜索限制及考虑不同额外维度情形影响，扩展搜索范围至更低质量区域，为未来实验分析奠定基础。
AI 中文摘要
额外维度理论的特征预测是出现一系列有质量的引力子。在这项工作中，我们研究了大型强子对撞机能区对共振重自旋-2粒子的限制，焦点在于整个引力子塔，超越了传统单共振分析。由于塔的几个态可能处于同一可及质量窗口内，组合信号增强，所得限制可能比单独单共振强得多。我们首先利用收集的高于约200 GeV的数据集更新了来自ATLAS和CMS的双光子和双轻子数据对单引力子搜索的当前限制，然后考虑不同额外维度情形对全态塔限制的影响。这使我们能将当前搜索范围扩展到比通常考虑的更低质量区域，为实验合作的未来分析铺平道路。
英文摘要
The signature prediction of extra-dimensional theories is the appearance of a tower of massive gravitons. In this work, we study the constraints on resonant heavy spin-2 particles at the Large Hadron Collider (LHC), with focus on the entire tower of gravitons, beyond the traditional single-resonance analysis. Since several states of the tower can lie within the same accessible mass window, the combined signal is enhanced, and the resulting constraints can be significantly stronger than those obtained from a single resonance alone. We first update the current constraints on single graviton searches stemming from diphoton and dilepton data from ATLAS and CMS, using datasets collected above $\sim 200\,{\rm GeV}$, and then consider the impact on the bounds of the full tower of states for different extra-dimensional scenarios. This allows us to extend the reach of current searches to lower mass regions than typically considered, paving the way for future analyses by experimental collaborations.
Comments30 pages, 10 figures
