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KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2026winter)

16–19 Feb 2026
San-go-kan (Building #3)
Asia/Tokyo timezone

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Session

parallel session B: Cosmo

17 Feb 2026, 10:40
meeting room

meeting room

Conveners

parallel session B: Cosmo

  • Yohei Ema

Presentation materials

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  1. 17. Thermal precondensation in gauge-fermion theories and its cosmological implications
    Alvaro Pastor Gutierrez
    17/02/2026, 10:40
  2. 19. Screening Effects of Finite-Mass Fermions in Monopole Baryogenesis Scenario
    Yukito Kato
    17/02/2026, 11:00

    To investigate the finite mass effects in recently proposed monopole baryogenesis scenario, this study analyzes screening effect for the electric monopole charge, induced by CP-violating theta term, within a 't Hooft-Polyakov monopole background. Utilizing partial wave expansion and bosonized effective field theory for the massive charged fermions, we demonstrate that fermion finite masses...

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  3. 18. Electromagnetic leptogenesis in an effective field theory
    Rin Takada

    We present a unified, gauge-invariant EFT analysis of low-scale electromagnetic leptogenesis sourced by CP-violating neutrino–gauge dipole interactions. We first match UV-complete models onto the dimension-six effective operator, and evaluate the decay widths, CP asymmetries, and the corresponding transport equations in the electroweak-broken phase. We then show that the suppression arising...

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