来自LHC的二子共振搜索的malaphoric模型的限制
1DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA UK.
The European physical journal. C, Particles and fields
|March 17, 2025
概括
恶心的Z是一个不好的Z.
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) 取得了令人难以置信的成功,但也有局限性.
- 提出了新的物理模型,例如malaphoric Z'模型,以解决这些限制.
- 在B-meson衰变中的勒普顿风味普遍性 (LFU) 测量显示与SM预测的紧张关系.
研究的目的:
- 来自大型强子对撞机 (LHC) 的实验约束,以对抗malaphoric Z'模型.
- 调查 malaphoric Z' 模型是否可以解释 LFU 张力,并改善 SM 预测.
- 为了确定malaphoric Z'模型的允许参数空间.
主要方法:
- 利用13 TeV LHC在二子通道中寻找共振的实验界限.
- 分析了马拉福Z'玻色子与不同费米子家族的合.
- 将模型预测与标准模型可观测值进行比较,特别是涉及b-夸克到s-夸克过渡的模型.
主要成果:
- 不良的Z'模型,其来自动力混合的特定合,改善了适合LFU测量的情况.
- 来自二子共振搜索的约束是显著的,因为Z'玻色子与轻夸克的合.
- 一个不可忽视的参数空间仍然存在,malaphoric Z'模型改进了对b夸克到s夸克转换的几个标准模型预测.
结论:
- 恶性Z'模型提供了一个令人信服的解释,用于观察到B-meson衰变中的异常.
- 目前的LHC数据仍然允许这个扩展尺寸玻色子模型有一个可行的参数空间.
- 未来的高亮度LHC (HL-LHC) 运行将显著提高探测Z'玻色子更高质量尺度的灵敏度.
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