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LHC作为一个轴子-光子碰撞器
Sergio Barbosa1, Matheus Coelho1, Sylvain Fichet1
1Universidade Federal do ABC, CCNH, Santo André, 09210-580 SP, Brazil.
Physical review letters
|November 17, 2025
概括
大强子对撞机 (LHC) 可以充当轴子类粒子 (ALP) 对撞机. 在质子离子 (pPb) 相互作用中的ALP-光子碰撞提供了一种独特的方式来探测ALP合到顶级夸克.
科学领域:
- 高能物理 高能物理
- 粒子物理学 粒子物理学
- 碰撞器物理学 碰撞器物理学
背景情况:
- 轴状粒子 (ALP) 是标准模型的一些扩展所预测的假设粒子.
- 相对论粒子束可以产生类现实ALP的流动,类似于通过韦兹塞克-威廉姆斯近似来生成光子.
研究的目的:
- 调查大型强子对撞机 (LHC) 作为轴子类粒子 (ALP) 对撞机的潜力.
- 在LHC探索ALP-ALP和ALP-光子碰撞过程.
- 研究ALP碰撞对特定ALP合的敏感性,特别是对第三代费米子的敏感性.
主要方法:
- 使用威泽克-威廉姆斯类近似来建模来自相对论粒子束的ALP流.
- 将ALP流量计算实现到对碰撞机环境的模拟工具中.
- 分析超外围碰撞 (UPC),特别是质子-离子 (pPb) 碰撞,作为ALP-光子相互作用的主要道.
主要成果:
- 与质子相比,来自重离子的ALP流被抑制,使质子-质子或质子-离子碰撞更有利于ALP研究.
- 在质子离子 (pPb) 超外围碰撞中的ALP-光子碰撞被确定为ALP合到第三代费米子的敏感探测器.
- LHC pPb 数据可以将ALP合的积分与核子和顶夸克的积分限制为O{0.01 TeV-1).
结论:
- LHC可以作为一个有效的ALP碰撞器,ALP-光子碰撞是ALP属性的竞争性探测器.
- ALP-光子碰撞提供了一种主要的方法来探测ALP与顶级夸克的风味紫外线合.
- 应分析2016年现有的LHC pPb数据集,以寻找ALP-光子碰撞的证据.
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