arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2410.04773hep-phastro-ph.CO
收藏

强一阶电弱相变(EWPT)的对撞机新启示

New collider implications on a strongly first order EWPT

Ricardo R. Florentino, Shinya Kanemura, Masanori Tanaka

AI总结:

本研究采用模型无关方法推导强一阶电弱相变的充分条件,提出可结合HL-LHC的$hγγ$耦合精确测量与未来直线对撞机的$hhh$耦合测量,检验电弱重子生成模型的可行性。

摘要:

为理解宇宙早期历史并检验重子生成模型,确定电弱相变的性质至关重要。该相变的阶次与强度和$hhh$耦合的较大偏差密切相关。在$hhh$耦合偏差的相当一部分由带电粒子圈引起的模型中,$hγγ$耦合预计也会出现显著偏差。在本次报告中,我采用模型无关方法,阐述了如何推导足以实现强一阶相变的条件。在高亮度大型强子对撞机(HL-LHC)精确测定$hγγ$耦合后,这些条件可在未来直线对撞机上通过测量$hhh$耦合进行检验,从而最终确定含新带电标量的模型中电弱相变的性质,以及电弱重子生成的可行性。

英文摘要:

In order to understand the early history of the universe, and to test baryogenesis models, determining the nature of the electroweak phase transition is imperative. The order and strength of this transition is strongly correlated to relatively large deviations in the $hhh$ coupling. In models where a considerable part of the $hhh$ coupling deviation is caused by charged particle loops, the $hγγ$ coupling is also expected to deviate considerably. In this talk, by using a model-independent approach, I explain how to obtain conditions that are sufficient for a strongly first order phase transition. After the $hγγ$ coupling is determined with precision at the HL-LHC, these conditions can be tested at Future Linear Colliders by measurements of the $hhh$ coupling, to conclusively determine the nature of the electroweak phase transition and the viability of electroweak baryogenesis on models with new charged scalars.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑