论文标题

LHC的Dilaton:复合希格斯的互补探针

Dilaton at the LHC: Complementary Probe of Composite Higgs

论文作者

Bruggisser, Sebastian, von Harling, Benedict, Matsedonskyi, Oleksii, Servant, Geraldine

论文摘要

在包含具有近似自发断裂的保形不变性的标准模型的各种扩展中预测了DILATON。作为自发破裂的对称性的金石玻色子,Dilaton自然可以成为最轻的新物理颗粒之一,因此可能是对撞机实验中观察到的第一个新物理学。特别是,它可以在紫外线中通常假定具有近似保形的复合希格斯模型中出现。当时,Dilaton是由产生Higgs的同一扇区生成的复合状态。我们使用最新的实验数据并分析了未来的检测前景,继续在LHC探索LHC的复合DILATON特征。我们详细介绍了Dilaton性质与希格斯电位的性质的连接,特别是阐明了与Electroweak微调相关的比例之间的关系与控制Dilaton耦合的比例。然后,该关系用于在天然复合希格斯情景中得出对DILATON的实验敏感性,该场景在Dilaton质量中达到〜3 TEV,以获取通用参数选择。同时,我们表明DILATON搜索是探测Higgs玻色子综合性的互补方向,其灵敏度可比或超过Higgs耦合测量值的敏感性。

The dilaton is predicted in various extensions of the standard model containing sectors with an approximate spontaneously-broken conformal invariance. As a Goldstone boson of a spontaneously broken symmetry, the dilaton can naturally be one of the lightest new physics particles, and therefore may be the first new physics imprint observed in collider experiments. In particular, it can arise in composite Higgs models which are often assumed to have approximate conformal invariance in the UV. The dilaton is then a composite state, generated by the same sector that produces the Higgs. We continue the exploration of composite dilaton signatures at the LHC, using the latest experimental data and analysing the future detection prospects. We elaborate on the connection of the dilaton properties with the properties of the Higgs potential, clarifying in particular the relation between the scale relevant for electroweak fine tuning and the scale controlling the dilaton couplings. This relation is then used to derive the experimental sensitivity to the dilaton in natural composite Higgs scenarios, which reaches ~3 TeV in dilaton mass for generic parameter choices. At the same time, we show that dilaton searches are a complementary direction to probe Higgs boson compositeness, with the sensitivity comparable or exceeding that of Higgs coupling measurements.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源