Dark Pion Dark Matter and Phenomenology

by Lingfeng Li (HKUST) , Lingfeng Li (Brown University)

Thursday Mar 5, 2026, 10:00 AM → 12:00 PM Asia/Shanghai

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#腾讯会议：278-362-704

报告摘要：In this talk, we discuss the Standard Model (SM) electroweak (EW) sector as a portal to the hidden sector, with EW bosons serving as mediators. We propose several UV complete models of the EW portal and explore their prospects in EW precision tests (EWPT). A rich phenomenology emerges when the hidden sector admits a confining gauge interaction, leading to a family of dark hadrons such as dark pions and rhos. These dark hadrons are generally long-lived if their mass is of the GeV scale. The primary signal in collider physics will be dark showers from exotic boson decays, generating multiple long-lived particles. We will cover current LHC searches and future detector proposals. At the end of the talk, we will also report some recent progress aiming for a new mechanism generating composite dark matter (DM).

报告人简介：Lingfeng Li graduated from Peking University in 2013 and received his PhD in Theoretical High Energy Physics from the University of California, Davis in 2018 under the supervision of Prof. Hsin-Chia Cheng. Then he worked at HKUST and Brown University as a Postdoctoral Researcher. He is interested in precision tests of the Standard Model and probing new physics with new models, methods, and mindsets.