论文标题
通过顶级夸克生产在未来的强子对撞机上探测轴突状颗粒的前景
Prospects for probing axionlike particles at a future hadron collider through top quark production
论文作者
论文摘要
在标准模型（SM）的高能扩展中，自发损坏的全局对称性出现了轴突状颗粒（ALP）。这导致阿尔卑斯山是未来实验的目标之一，该实验打算在SM以外寻找新物理。我们在通过模型独立的方法中与ALP（$ t \ bar {t}+\ text {alp} $）相关的顶级夸克对生产探测ALP模型参数时的未来PP碰撞器FCC-HH的影响力。该搜索是在$ t \ bar {t} $的半衰减衰减模式下执行的，并且使用检测器响应的参数模拟进行分析，以投影的集成光度为$ \ rm 30〜ab^{ - 1} $。结果表明，FCC-HH处的$ t \ bar {t}+\ text {alp} $生产是一个有前途的通道，对探测ALP耦合的敏感性很高。提出了与从HL-LHC获得的ALP耦合，并提出了其他实验以进行比较。
Axionlike particles (ALPs) emerge from spontaneously broken global symmetries in high energy extensions of the Standard Model (SM). This causes ALPs to be among the objectives of future experiments which intend to search for new physics beyond the SM. We discuss the reach of future pp collider FCC-hh in probing the ALP model parameters through top quark pair production associated with ALP ($t\bar{t}+\text{ALP}$) in a model-independent approach. The search is performed in the semileptonic decay mode of $t\bar{t}$ and the analysis is performed using a parametric simulation of the detector response for a projected integrated luminosity of $\rm 30~ab^{-1}$. It is shown that $t\bar{t}+\text{ALP}$ production at the FCC-hh is a promising channel with significant sensitivity to probe the ALP coupling with gluons. The ALP coupling with gluons obtained from HL-LHC and other experiments are presented for comparison.
