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SUMMARY:Dark Showers from Sneaky Dark Matter
DTSTART;VALUE=DATE-TIME:20260819T050000Z
DTEND;VALUE=DATE-TIME:20260819T060000Z
DTSTAMP;VALUE=DATE-TIME:20260815T012400Z
UID:indico-event-5228@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Fatemeh Elahi (Johannes Gutenberg University Mainz)\
 n\nAbstract: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-chan
 nel mediator carrying Standard Model color charges. For nf>3\, the dark fl
 avor symmetry guarantees the stability of a subset of the dark pions\, whi
 ch serve as our dark matter candidates. I will show that the relic abundan
 ce of this dark matter is determined by annihilation within the dark secto
 r into the remaining dark pions. Because this process is strongly suppress
 ed at low temperatures\, the model "sneaks" away from stringent indirect d
 etection constraints\, opening up the GeV mass window. Furthermore\, the u
 nstable dark pions are naturally long-lived\, leading to distinct signatur
 es at colliders such as semi-visible or emerging jets. Finally\, I will di
 scuss the exotic phenomenological signatures that emerge if the dark secto
 r couples to leptons instead of quarks.Speaker Bio:Fatemeh Elahi is a post
 doctoral researcher at Johannes Gutenberg University Mainz. Prior to this\
 , she was a postdoctoral researcher at the Institute for Research in Funda
 mental Sciences (IPM) in Iran from 2017 to 2020. She earned her PhD from t
 he University of Notre Dame (2012–2017) under the supervision of Christo
 pher Kolda and Adam Martin. Her research primarily focuses on dark matter 
 scenarios beyond standard assumptions and their exotic signatures in cosmo
 logy\, astrophysics\, and at the LHC.Alternative online link: https://mee
 ting.tencent.com/dm/EgkXzGk7Zx8AID: 140441783 (No Password)\n\nhttps://i
 ndico-tdli.sjtu.edu.cn/event/5228/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/5228/
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