Joined APCTP as a research intern
Working on paleo-detection of dark matter.
Riasat Sheikh
PhD Researcher
I am a PhD researcher in elementary particle theory at Kyushu University, with research interests in dark matter, Higgs physics, and particle phenomenology beyond the Standard Model.
Two component pseudo-Nambu-Goldstone-boson dark matter
We study a two-component pseudo-Nambu-Goldstone-boson (pNGB) dark matter (DM) model motivated by boosted dark matter (BDM). The model is based on a complex scalar field charged under a dark $\text{U}(1)_V$ gauge symmetry, with a softly broken global $\text{SU}(3)_g$ symmetry that is spontaneously …
Awarded a 2026 Research Encouragement Grant from Fujukai (風樹会)
Awarded a 2026 research encouragement grant from Fujukai (風樹会) in support of my research on methods to probe pseudo-Nambu-Goldstone dark matter.
Awarded the 2026 Sasakawa Scientific Research Grant
Awarded the 2026 Sasakawa Scientific Research Grant from The Japan Science Society for a project on methods to probe pseudo-Nambu-Goldstone dark matter.
Invited talk at Jilin University Young Scientist Forum
Presented an invited seminar on ways to probe pseudo-Nambu-Goldstone boson dark matter at Jilin University's Young Scientist Forum.
Oral presentation at the 131st JPS Kyushu Branch Meeting
Delivered my first physics presentation in Japanese on ways to probe pseudo-Nambu-Goldstone boson dark matter at the 131st JPS Kyushu Branch Meeting.
Completed CDHE certification at Kyushu University
Completed Kyushu University's Preparing Future Faculty Program and earned certification in Course Design in Higher Education (CDHE).
Oral presentation at SI2025 in Yeosu
Presented a talk on probing pseudo-Nambu-Goldstone boson dark matter at the 29th International Summer Institute on Phenomenology of Elementary Particle Physics and Cosmology.
hep-ph
JHEP
Pseudo-Nambu-Goldstone-boson Dark Matter from Three Complex Scalars
This study explores a dark matter model in which a pseudo-Nambu-Goldstone boson arises as a viable dark matter candidate from the spontaneous and soft breaking of global $\mathrm U(1)$ symmetries and stabilized by a residual $\mathbb{Z}_3$ discrete symmetry. The model introduces three complex scalar …
Poster presentation and honorable mention at HPNP2025
Presented a poster on pseudo-Nambu-Goldstone boson dark matter and received a Best Poster Honorable Mention at HPNP2025.