Solving the Stong CP Problem with Heavy Axions Within the Composite Higgs Model Framework

18 May 2026, 14:00
15m
三楼查理厅 (南京维景国际酒店)

三楼查理厅

南京维景国际酒店

Speaker

Dr Xuhui Jiang (ICTP-AP)

Description

We explore one attractive ultraviolet-violet complete extension of the Standard Model (SM) with the gauge structure $SU(5)\times Sp(2)^\prime\times SU(2)_L \times U(1)_Y^\prime$ that breaks into a technicolor (TC) sector, the QCD and $U(1)_Y$. The TC sector later confines, respecting $SU(4)/Sp(4)$ to yield the SM Higgs boson. The TC confinement and the small instanton of $Sp(2)^\prime$ altogether enhance the axion potential. Eventually, all axions in our model are far heavier than the QCD one and the strong CP problem is automatically solved.

Primary authors

Ms Dan Lin Teng Ma (University of Chinese Academy of Sciences) Dr Xuhui Jiang (ICTP-AP) Prof. Giacomo Cacciapaglia (Paris, LPTHE) Mr Vigilante Risi

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