论文标题
新的对撞机搜索轴心状的颗粒耦合到胶子
New Collider Searches for Axion-like Particles Coupling to Gluons
论文作者
论文摘要
在标准模型的许多扩展中，出现了与自发损坏的全局对称性相关的伪nambu-goldstone玻色子（ALP）。假设最通用的Lagrangian直到与SM场相互作用的ALP相互作用的Dimension-5运算符，我们首次研究LHC13对ALP生产的敏感性与DI-JET相关。这项研究的重点是在检测器上以看不见的颗粒形式出现的光阿尔卑斯山。执行逼真的检测器仿真并部署多元技术以最好地区分信号与背景，我们将ALP耦合的预期上限设置为与胶子的上限。考虑了一组全面的背景过程，并且表明该过程对ALP-Gluon耦合提供了显着的敏感性，并且所得的结合比在LHC上获得的界限更为严格。我们还展示了HE-LHC27和FCC-HH100的前景，并表明这些未来的山脉能够将LHC的限制提高大约一个数量级。
Axion-like particles (ALPs) are pseudo Nambu-Goldstone bosons associated with spontaneously broken global symmetries emerging in many extensions of the Standard Model. Assuming the most general effective Lagrangian up to dimension-5 operators for an ALP interacting with the SM fields, we investigate for the first time the sensitivity of the LHC13 to the ALP production in association with a di-jet. This study is focused on light ALPs which appear as invisible particles at the detector. Performing a realistic detector simulation and deploying a multivariate technique to best discriminate the signal from backgrounds, we set expected upper bounds on the ALP coupling to gluons. A comprehensive set of background processes is considered, and it is shown that this process provides significant sensitivity to the ALP-gluon coupling and the resulting bound is more stringent than those already obtained at the LHC. We also present prospects for the HE-LHC27 and FCC-hh100 and show that these future colliders are able to improve the limits from the LHC by roughly one order of magnitude.
