Topological Portal to the Dark Sector

February 20, 2024
11:30am to 1:00pm

IFT Seminar Room/Red Room

Specialist level
Joe Davighi

IFT Seminar Room/Red Room


I will propose a topological portal interaction connecting quantum chromodynamics (QCD) with a dark QCD-like sector, present only for a unique dark coset structure SU(2)/SO(2) after confinement, which connects three QCD pions to two dark pions. Upon gauging QED, the topological interaction serves as the leading portal between the two sectors, providing an elegant self-consistent scenario of light thermal inelastic dark matter. The inherent antisymmetrization leads to diminished annihilations at later times and extremely suppressed direct detection. However, novel collider signatures involving boosted pions and missing energy offer tremendous prospects for discovery at Belle II. The talk is based on with Admir Greljo and Nudzeim Selimovic.