12th Workshop on Flavor Symmetries and Consequences in Accelerators and Cosmology (FLASY 2026)

Session

Contributed 3

19 Aug 2026, 16:20

Commodore Hotel

2. Large CP Violation in the Complex Two-Higgs-Doublet Model: From Electron EDM to Hidden CPV

Soojin Lee (National Tsing Hua University)

19/08/2026, 16:20

Parallel talks: 17'+3'

We perform a comprehensive global analysis of the Complex Two-Higgs-Doublet
Model with softly broken Z₂ symmetry, identifying the intrinsic structure
of parameter regions supporting large CP violation under all current
constraints, including the JILA electron EDM bound. Type-I and Type-II
follow qualitatively distinct pathways: Type-I predicts $|d_e| ≳ 10⁻³¹$ e·cm,
fully testable by...

7. On the Low Energy Behavior of Dynamical Gauge Couplings

Michael Shamma (Korea Institute for Advanced Study)

19/08/2026, 16:40

We study the low-energy behavior of gauge couplings in the presence of dynamical scalar backgrounds. In weakly coupled, renormalizable four-dimensional theories, gauge invariance prevents tree-level modifications of the gauge kinetic term, so the dependence on scalar background is logarithmic, reflecting renormalization group structure. Large variations thus require large field excursions or...

46. Uncovering Hidden Leptonic Correlations with Flow Matching and Autoencoders

Haruto Kitagawa (Kyushu University)

19/08/2026, 17:00

Parallel talks: 17'+3'

In this study, we analyze the latent features of physical observables in the lepton sector using an autoencoder. To obtain the dataset of physical observables, we employ flow matching to globally sample the Yukawa matrices and Majorana mass parameters within the framework of the type-I seesaw mechanism, reproducing the experimentally observed values. The learned latent representation reveals...

20. Two-Pion HBT Signatures of Inhomogeneous Phases in Finite-Density QCD

Yongtae Heo (Hiroshima University, WPI-SKCM²)

19/08/2026, 17:20

Parallel talks: 17'+3'

Spatially inhomogeneous phases may arise transiently in hot and baryon-rich QCD matter and may leave characteristic imprints on two-pion Hanbury Brown–Twiss (HBT) correlations. We investigate such signatures in Au+Au collisions in the RHIC Beam Energy Scan region using the JAM2 transport model. A controlled one-dimensional spatial modulation is imposed on pion emission distributions generated...

22. "Heavy-Quark Expansion Meets Experiment: Heavy-Hadron Lifetimes"

Blazenka Melic (Rudjer Boskovic Institute Zagreb)

19/08/2026, 17:40

Parallel talks: 17'+3'

In this talk, I review recent progress in the theoretical description of heavy-hadron lifetimes across different flavor systems, ranging from heavy–light mesons and baryons to doubly heavy hadrons. I discuss how spectator effects, weak annihilation, and Pauli interference contribute to lifetime differences among hadrons with the same heavy quark, and how these effects can be quantified using...