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在sqrt[s]=13 TeV的多重pton事件的喷射多重性模式中寻找新的物理
A Hayrapetyan1, A Tumasyan1, W Adam2
1Yerevan Physics Institute, Yerevan, Armenia.
Physical review letters
|December 19, 2025
概括
研究人员通过使用大型强子对撞机的多平面事件寻找超越标准模型的新物理学. 数据显示没有偏离标准模型预测,排除了涉及超对称的某些理论.
科学领域:
- 高能物理 高能物理
- 粒子物理学 粒子物理学
- 超越标准模型物理学的超越
背景情况:
- 粒子物理学的标准模型 (SM) 描述了基本粒子和力.
- 寻找超越SM的物理学对于理解宇宙的基本组成部分至关重要.
- 多平面事件为探索新的物理现象提供了丰富的签名.
研究的目的:
- 为了进行第一个超越标准模型 (BSM) 的物理学的搜索,使用多重事件中的喷气多重性模式.
- 探讨某些BSM理论预测的喷气式飞机生产速度的潜在增强,特别是那些涉及超对称的理论.
- 通过将观察到的数据与SM预测进行比较,为新的物理场景设定限制.
主要方法:
- 来自LHC的CMS探测器的13 TeV质子对质子碰撞的大数据集 (138 fb-1) 的分析.
- 检查一,两个和四个莱普顿的事件中的喷射倍数分布.
- 专注于带有和没有底部夸克的三子事件,以寻找BSM签名.
- 在超对称模型框架内解释结果,并违反R平价.
主要成果:
- 观察到的多重事件中的喷气式多重分布与标准模型的预期一致.
- 在这次搜索中,没有发现超越标准模型的新物理学的重要证据.
- 数据对超对称场景施加了约束,这些场景涉及电弱电荷-中性超伴和违反R平价的相互作用.
结论:
- 目前来自CMS实验的数据不支持所寻求的特定BSM物理存在.
- 结果排除了超对称模型的参数空间的一部分,其中有违反R平价的衰变.
- 需要进一步搜索增加的亮度和精细的分析技术来探索其他BSM场景.
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