Powered by Indico
v3.2.3
Abstract:
In this talk, I will present a minimal composite dark matter model based on an SU(3) dark sector with nf dark quarks and a heavy t-channel mediator carrying Standard Model color charges. For nf>3, the dark flavor symmetry guarantees the stability of a subset of the dark pions, which serve as our dark matter candidates. I will show that the relic abundance of this dark matter is determined by annihilation within the dark sector into the remaining dark pions. Because this process is strongly suppressed at low temperatures, the model "sneaks" away from stringent indirect detection constraints, opening up the GeV mass window. Furthermore, the unstable dark pions are naturally long-lived, leading to distinct signatures at colliders such as semi-visible or emerging jets. Finally, I will discuss the exotic phenomenological signatures that emerge if the dark sector couples to leptons instead of quarks.
Speaker Bio:
Fatemeh Elahi is a postdoctoral researcher at Johannes Gutenberg University Mainz. Prior to this, she was a postdoctoral researcher at the Institute for Research in Fundamental Sciences (IPM) in Iran from 2017 to 2020. She earned her PhD from the University of Notre Dame (2012–2017) under the supervision of Christopher Kolda and Adam Martin. Her research primarily focuses on dark matter scenarios beyond standard assumptions and their exotic signatures in cosmology, astrophysics, and at the LHC.
Alternative online link: https://meeting.tencent.com/dm/EgkXzGk7Zx8A
ID: 140441783 (No Password)
Yuichiro Nakai