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2026 CAU Beyond the Standard Model Focus Workshop

9–12 Feb 2026
Chung-Ang University
Asia/Seoul timezone

Contact: Prof. Hyun Min Lee

Contribution List

38 out of 38 displayed
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  1. 1. Neutrino signals from dark matter spikes
    Alejandro Ibarra (Technical University of Munich)
    09/02/2026, 09:30
    S1

    We summarize the status of dark matter indirect searches using neutrinos as messengers, and we point out that dark matter spikes around supermassive black holes can enhance significantly the neutrino flux from nearby galaxies, possibly even at the reach of neutrino telescopes. In particular, we propose that the measured neutrino flux from NGC1068 could be attributed to dark matter...

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  2. 2. Boosted Dark Matter: Theory and Detection Prospects
    Dr Takashi Toma (Kanazawa University)
    09/02/2026, 10:00
    S1
  3. 3. Parity Violation in Spin-1 Dark Matter with EFT Descriptions
    Prof. Kimiko Yamashita (Ibaraki University)
    09/02/2026, 11:00
    S2
  4. 4. Taming the dark photon production via a non-minimal coupling to gravity
    Jong-Hyun Yoon
    09/02/2026, 11:30
    S2

    I begin with a pedagogical introduction to cosmological particle production during and after inflation, reviewing the theoretical framework of inflaton dynamics, gravitational particle production, and numerical techniques. I discuss various production scenarios studied in different cosmological contexts, with emphasis on computational methods and challenges. I then present our recent work on...

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  5. 5. Fermion reheating with a quartic inflaton potential
    Adriana Menkara
    09/02/2026, 12:00
    S2
  6. 8. Deep learning approaches to top FCNC couplings to photons at the LHC
    Dr Adil Jueid (Institute for Basic Science)
    09/02/2026, 14:30
    S3
  7. 36. Chasing the two-Higgs-doublet model via electroweak corrections at e+ e− colliders
    Tatsuya Banno
    09/02/2026, 15:00
    S3

    We present a comprehensive study of Higgs boson production associated with a neutrino pair at e+e− colliders (e+e−→hνν¯) at the next-to-leading-order accuracy in both the Standard Model and the two-Higgs-doublet model. We show that new physics effects from the extended Higgs sector can be probed through electroweak corrections, which lead to several percent deviations from the Standard Model...

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  8. 9. Electric Dipole Moment of Electron induced by Electroweak Multiplet at Full Three-loop
    Kiyoto Ogawa (Nagoya.Univ)
    09/02/2026, 15:15
    S3

    There has been remarkable progress in recent years in the electric dipole moment (EDM) measurements of electron using paramagnetic atom or molecule. In a previous study, we calculated the contribution to the electron EDM induced by the CP-violating Yukawa interaction of electroweak multiplets at the three-loop level in effective field theory. We found that this contribution might reach the...

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  9. 7. Entanglement in Higgs Scattering and possible connection to symmetry
    Ms ROJALIN PADHAN (Institute of Physics, Bhubaneswar)
    09/02/2026, 16:00
    S4
  10. 10. SUSY and non-SUSY analysis of truly confining gauge theories
    Shota Saito (Kavli IPMU)
    09/02/2026, 16:30
    S4

    We classify 4D N=1 truly confining supersymmetric gauge theories, in which no center charges can be screened. This property guarantees that Wilson loops in the fundamental representation exhibit an area law. We systematically identify all such theories for simple Lie groups and determine the allowed matter content. In each theory, we find condensing magnetic operators, which are expected to...

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  11. 38. Dynamical friction for circular orbits in self-interacting ultralight dark matter and Fornax globular clusters
    Hyeonmo Koo
    09/02/2026, 16:45
    S4

    We investigate the impact of repulsive self-interaction in ultralight dark matter (ULDM) on dynamical friction in circular orbits in ULDM halos and its implications for the Fornax dwarf spheroidal (dSph) galaxy's globular clusters. Using the Gross-Pitaevskii-Poisson equations, we derive the dynamical friction force considering soliton density profiles for both non-interacting and strongly...

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  12. 11. Spontaneous Leptogenesis in Type I Seesaw
    Eung Jin Chun (Korea Institute for Advanced Study)
    10/02/2026, 09:30
    S5
  13. 12. Quantum enhanced sensing for ultralight dark matters
    Bin Xu
    10/02/2026, 10:00
    S5
  14. 13. Identifying high energy sources of CP violation and PQ breaking with electric dipole moments
    Dr Sang Hui Im (IBS CTPU)
    10/02/2026, 11:00
    S6
  15. 14. Rare meson decays with dark matter emission
    Shohei Okawa (APCTP)
    10/02/2026, 11:30
    S6
  16. 16. Dark pion scattering and vector resonance in Sp(4) gauge theory
    Jong-Wan Lee (Institute for Basic Science (IBS))
    10/02/2026, 12:00
    S6
  17. 28. Testing neutrino mass origins with supernova neutrinos
    Chui-Fan Kong
    10/02/2026, 15:00
    S7
  18. 17. Self-resonant dark matter with Z_4 gauged symmetry
    Lucca Radicce Justino
    10/02/2026, 15:30
    S7
  19. 18. Stable dark matter from Pauli blocking in the degenerate fermion background with Quantum Field Theory
    Junghoon Joh (SungKyunKwan University)
    10/02/2026, 15:45
    S7

    We study a mechanism to make dark matter stable based on the Pauli blocking in the fermion background. In the background where fermions occupy the states, the decay of dark matter to those final states is not allowed, as a result, DM becomes stable. We derive the evolution equations of the distribution function in the quantum field theory and compare it with the Boltzmann equation. We apply...

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  20. 19. Aspects of Sommerfeld Enhancement in the light of Halo gamma-ray excess
    Yongsoo Jho
    10/02/2026, 16:30
    S8
  21. 20. Neutrino masses and mixed dark matter from doublet and singlet scalars
    Seongsik Kim (Chung-Ang University)
    10/02/2026, 17:00
    S8

    We consider the extension of the SM with an inert scalar doublet,
    three right-handed neutrinos, and singlet scalar fields, ϕ and S. In this model, neutrino
    masses are zero in the limit of the unbroken Z4 discrete symmetry. We show that when the
    singlet scalar field ϕ gets a VEV, the Z4 symmetry is broken to Z2, and neutrino masses
    are generated at one-loops due to the mixings between the...

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  22. 21. From Scattering Amplitudes to Black Holes
    Katsuki Aoki (YITP, Kyoto University)
    11/02/2026, 09:30
    S9
  23. 22. Black holes as a probe of BSM particles
    Dr Minxi He
    11/02/2026, 10:00
    S9

    Astrophysical probes are powerful tools to search for Beyond the Standard Model (BSM) particles, complementary to terrestrial detectors. As commonly exist throughout the Universe, black holes (BH) are intriguing astrophysical objects due to their strong gravity that can help to study BSM particles. In this talk, I will show that BSM particles can interact and form structures around BHs, here...

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  24. 23. Modular Cosmology: Implications for Inflation
    Shuntaro AOKI
    11/02/2026, 11:00
    S10

    Modular symmetry arises in various extensions of the Standard Model and plays an important role in particle phenomenology, particularly as a framework for flavor symmetries. In this talk, I will explore the cosmological implications of modular symmetry, with a special focus on inflationary physics. I will discuss how specific couplings between moduli and the Standard Model sector can influence...

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  25. 24. Constraining Inflation via FIMP dark matter using the β-function with collider implications
    Sarif Khan (Goettingen University)
    11/02/2026, 11:30
    S10
  26. 25. Peccei Quinn genesis
    Junho Song
    11/02/2026, 12:00
    S10
  27. 26. Higgs pole inflation in the light of ACT data
    Jeonghak Han
    11/02/2026, 12:15
    S10
  28. 15. Belle II excess and dark matter
    Dr Jongkuk Kim (Chung-Ang University)
    11/02/2026, 14:30
    S11

    The Belle II Collaboration recently announced the first observation of the 𝐵 → 𝐾 + 𝜈 𝜈 decay process. This decay channel provides a particularly clean signal and allows for high theoretical precision. However, their measurement shows a 2.7𝜎 deviation from the Standard Model prediction. To address this excess, we study a scalar dark matter model. Assuming a dark 𝑈 (1)𝑋≡𝑈(1)𝐿𝜇−𝐿𝜏 symmetry, this...

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  29. 27. The Seesaw Route to Neutrino Asymmetry and Baryogenesis in light of EMPRESS observation
    Arghyajit Datta
    11/02/2026, 15:00
    S11

    We present a type-I seesaw scenario within the supersymmetric $U(1)_{B-L}$
    extension of the Standard Model that simultaneously explains the large electron–neutrino asymmetry suggested by EMPRESS and the observed tiny baryon asymmetry. Both asymmetries originate from the decay of the $B−L$ Higgs condensate dominating the early Universe. It`s early rare decays into heavy right-handed...

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  30. 29. Periodic dynamics induced by wave dark matter: From neutrino to superconductor
    Yechan Kim (KAIST)
    11/02/2026, 15:30
    S11

    The oscillating wave dark matter can act as a periodic driver, producing distinct modulation signatures not only in particle physics (e.g., neutrinos), but also in solid-state physics (e.g., superconductors). This talk is based on our recent papers PRD 108, 095028 (2023); JHEP 07 (2025) 269; arXiv: 2509.22892.

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  31. 30. Spin Correlation and Quantum Observables at Colliders
    Dong Woo Kang (KIAS)
    11/02/2026, 16:15
    S12
  32. 31. Quantum Correlations at the LHC
    Alberto Navarro (Seoultech)
    11/02/2026, 16:45
    S12
  33. 32. Gravitational Wave Messages from Dark Sectors and Grand Unification
    Joern Kersten (University of Bergen)
    12/02/2026, 09:30
    S13
  34. 33. A new mechanism of gravitational wave production
    Wenyuan Ai
    12/02/2026, 10:00
    S13

    First-order phase transitions in the early Universe are a well-motivated source of gravitational
    waves (GWs). In this talk, I will discuss a previously overlooked GW production mechanism:
    gravitational transition radiation, arising from graviton emission by particles whose mass changes
    as they pass through expanding bubble walls. The resulting spectrum features a distinctive shape with a...

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  35. 34. Electroweak phase transition and bubble wall dynamics
    Carlo Branchina (Università della Calabria)
    12/02/2026, 11:00
    S14
  36. 35. Magnetic Helicity, Higgs Winding, and Chiral Asymmetry
    Kyohei Mukaida (DESY)
    12/02/2026, 11:30
    S14
  37. 37. Understanding Galactic Dark Matter with Generative Models and Physics-Informed Neural Networks
    Sung Hak Lim (Rutgers University)
    12/02/2026, 12:00
    S14

    Mapping the Milky Way’s dark matter requires moving beyond traditional, rigid dynamical models. In this talk, generative models—specifically Normalizing Flows— are used to learn the stellar phase space distribution directly from Gaia data. This approach enables a flexible, model-independent reconstruction of the Galactic gravitational potential and local dark matter density. These data-driven...

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  38. 6. Large and Hidden CP Violation in the Complex Two-Higgs-Doublet Model
    Jeonghyeon Song
    S3

    We present a systematic study of large CP violation in the Complex Two-Higgs-Doublet Model with softly broken $Z_2$ symmetry, based on global scans of Type-I and Type-II realizations including theoretical consistency, collider data, and the stringent electron EDM constraint. We identify two qualitatively different CP-violating regimes: in Type-I, sizable gauge-sector CP violation is possible...

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