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SUMMARY:From Antiproton Excess to Dark Matter Constraints
DTSTART;VALUE=DATE-TIME:20260521T030000Z
DTEND;VALUE=DATE-TIME:20260521T040000Z
DTSTAMP;VALUE=DATE-TIME:20260528T193300Z
UID:indico-event-5028@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Yue-Lin Sming（蔡岳霖） (Purple Mountain Observ
 atory (PMO))\n\nAbstract:Recent measurements by AMS-02 have revealed an ex
 cess in cosmic-ray antiprotons compared to standard astrophysical predicti
 ons\, raising the possibility of a dark matter origin. In this seminar\, I
  review the current status of this excess\, highlighting key uncertainties
  from cosmic-ray propagation and nuclear physics\, and discuss how complem
 entary constraints from indirect detection experiments such as Fermi-LAT a
 nd DAMPE\, together with direct detection experiments including XENONnT an
 d PandaX\, significantly restrict viable dark matter scenarios. Using an e
 ffective field theory (EFT) framework\, I systematically connect indirect 
 signals to direct detection bounds\, and further explore minimal dark matt
 er realizations that can account for the observed excess. I also discuss t
 he role of cosmic-ray antideuterons as a complementary low-background prob
 e\, with future measurements from GAPS offering promising discovery potent
 ial. Focusing on simple frameworks such as Higgs-portal–type models\, I 
 show that only a narrow parameter space remains consistent with existing d
 ata\, while solar modulation effects play an important role in interpretin
 g low-energy observations. Overall\, the antiproton excess remains an intr
 iguing hint of dark matter\, with upcoming data expected to clarify its or
 igin.Biography:Dr. Yue-Lin Sming Tsai is currently a senior Research Fello
 w at Purple Mountain Observatory (PMO). He received his Ph.D. in Physics a
 nd Astronomy from the University of Sheffield in 2011\, specializing in pa
 rticle astrophysics. Before joining PMO\, he has held postdoc positions at
  the NCBJ in Poland (2011–2013)\, the Kavli IPMU of Tokyo University (20
 13–2016)\, the National Center for Theoretical Sciences in Taiwan (2016
 –2017)\, the Institute of Physics at Academia Sinica as a visiting assoc
 iate professor (2017–2020)\, and National Tsing Hua University as a rese
 arch scholar (2020–2021).His research focuses on dark matter phenomenolo
 gy\, aiming to probe the particle properties of dark matter by connecting 
 theoretical models with experimental data. He specializes in testing high-
 dimensional theoretical models using diverse datasets. His current interes
 ts include indirect and direct detection of dark matter\, cosmological imp
 lications of dark matter (including linear theory and non-linear N-body si
 mulations)\, and dark matter model testing. He has published 76 papers in 
 the field of dark matter research\, with an h-index of 34.Online Meeting R
 oom： https://meeting.tencent.com/dm/ltjtux4SZIOSID: 205413181\n\nhttps:/
 /indico-tdli.sjtu.edu.cn/event/5028/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/5028/
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