Name: KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2026winter)
Start: 2026-02-16T01:00:00+09:00
End: 2026-02-19T17:00:00+09:00
Location: San-go-kan (Building #3)

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

from Monday, February 16, 2026 (1:00 AM) to Thursday, February 19, 2026 (5:00 PM)

Monday, February 16, 2026

10:00 AM

10:00 AM - 10:10 AM
Room: Seminar hall
10:10 AM
10:10 AM - 11:30 AM
Room: Seminar hall
Contributions

10:10 AM TBA - Michael Spannowsky

10:50 AM Light new physics and rare tau decays - Jure Zupan
11:30 AM

11:30 AM - 1:00 PM
1:00 PM
1:00 PM - 2:20 PM
Room: Seminar hall
Contributions

1:00 PM Current Status and Future Prospects of Belle II - Yu Nakazawa

1:40 PM TBA - Zoltan Ligeti
2:20 PM coffee
coffee
2:20 PM - 2:40 PM
2:40 PM
2:40 PM - 3:20 PM
Room: Seminar hall
Contributions

2:40 PM The EIC and ePIC Experiments: Current Status and Synergies with High-Energy Physics - Kentaro Kawade
3:20 PM coffee
coffee
3:20 PM - 4:30 PM
4:30 PM
4:30 PM - 5:30 PM
Room: Seminar hall
Contributions

4:30 PM Walking-Dilaton Hybrid Inflation in a Model with Dynamical Scalegenesis - HIROYUKI ISHIDA

4:50 PM Emission of Nambu-Goldstone bosons from semilocal string networks - Yukihiro Kanda

5:10 PM Relaxing Cosmological Constraints on the Minimal $U(1)_{L_\mu - L_\tau}$ Model with One-Loop Corrections - Jun Miyamoto
4:30 PM - 5:30 PM
Room: meeting room
Contributions

4:30 PM Higgs production in association with a Z boson at TeV-scale lepton colliders - Hiroyuki Furusato

4:50 PM Chasing Long-lived Scalars at the Future Lepton Colliders - Nivedita Ghosh

5:10 PM Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders - Keisho Hidaka
5:30 PM

5:30 PM - 7:30 PM
Tuesday, February 17, 2026
9:00 AM
9:00 AM - 10:20 AM
Room: Seminar hall
Contributions

9:00 AM Searching for dark matter in the gamma-ray sky - Shunsaku Horiuchi

9:40 AM A brief overview of ACT DR6 results - Toshiya Namikawa
10:20 AM coffee
coffee
10:20 AM - 10:40 AM
10:40 AM
10:40 AM - 11:40 AM
Room: Seminar hall
Contributions

10:40 AM Analysis of Monopoles Associated with Multi-Step Spontaneous Breaking of Gauge Symmetries - Fukutaro MIYA

11:00 AM Supersymmetric Gauge Theories with Confining Phases - Riku Ishikawa

11:20 AM Generalized CP from non-invertible selection rules - Hajime Otsuka
10:40 AM - 11:40 AM
Room: meeting room
Contributions

10:40 AM Thermal precondensation in gauge-fermion theories and its cosmological implications - Alvaro Pastor Gutierrez

11:00 AM Electromagnetic leptogenesis in an effective field theory - Rin Takada

11:20 AM Screening Effects of Finite-Mass Fermions in Monopole Baryogenesis Scenario - Yukito Kato
11:40 AM

11:40 AM - 1:00 PM
1:00 PM
1:00 PM - 2:20 PM
Room: Seminar hall
Contributions

1:00 PM TBA - Shinya Kanemura

1:40 PM Testable leptogenesis with three right-handed neutrinos - Yannis Georis
2:20 PM photo, coffee
photo, coffee
2:20 PM - 2:50 PM
2:50 PM
2:50 PM - 4:10 PM
Room: Seminar hall
Contributions

2:50 PM Phenomenology of electroweakly interacting spin-1 dark matter with Sommerfeld enhancement - Tomohiro Abe

3:10 PM Minimal Dark Matter in the sky: updated Indirect Detection probes - Mohammad Aghaie

3:30 PM Dark matter explanations for the neutrino emission from the Seyfert galaxy NGC 1068 - Kensuke Akita

3:50 PM Light neutrinophilic thermal dark matter - Tatsuya Aonashi
2:50 PM - 4:10 PM
Room: meeting room
Contributions

2:50 PM Two Higgs doublet models with a new U(1) gauge symmetry - Takaaki Nomura

3:10 PM Testing the Higgs triplet model via 125GeV Higgs boson decays with radiative corrections - Kodai Sakurai

3:30 PM Probing Compressed Inert Scalars with Forward Muon Tagging at the Muon Collider - Chandrima Sen

3:50 PM Probing spontaneous CP-violation through precision Higgs observables - Kei Yagyu
4:10 PM coffee
coffee
4:10 PM - 4:40 PM
4:40 PM
4:40 PM - 5:40 PM
Room: Seminar hall
Contributions

4:40 PM Revisiting Bino-slepton Coannihilation Dark Matter in Light of Recent Experimental Results - Alethea To

5:00 PM Forbidden Dark Matter with Sommerfeld Enhancement - Takumu Yamanaka

5:20 PM Asymmetric Dark Matter from Low-Scale Spontaneous Leptogenesis - Hiroki Takahashi
4:40 PM - 5:40 PM
Room: meeting room
Contributions

4:40 PM Possible scenarios for baryogenesis in the presence of a lepton number violating operator in the rare meson decays - Yushi Mura

5:00 PM Rare meson decay constraints on dark photon and the like - Osamu Seto

5:20 PM Radiative Corrections to $D_s \to \ell \nu$ and CKM Unitarity Test - Kota Sasaki
Wednesday, February 18, 2026
9:00 AM
9:00 AM - 10:20 AM
Room: Seminar hall
Contributions

9:00 AM TBA - Julia Harz

9:40 AM TBA - Yohei Ema
10:20 AM coffee
coffee
10:20 AM - 10:40 AM
10:40 AM
10:40 AM - 11:40 AM
Room: Seminar hall
Contributions

10:40 AM Sommerfeld Enhancement in the light of Halo gamma-ray excess - Yongsoo Jho

11:00 AM Composite Asymmetric Dark Matter from Primordial Black Holes - Takumi Kuwahara
10:40 AM - 11:40 AM
Room: meeting room
Contributions

10:40 AM Quintessence with a sudden transitional feature and its late-time cosmological signals - Takahiro Terada

11:00 AM Gravitational Wave signatures of Reheating after Warm Axion Inflation - Tenta Tsuji

11:20 AM Quantum sensing of high-frequency gravitational waves with ion traps - Ryoto Takai
11:40 AM

11:40 AM - 1:00 PM
1:00 PM
1:00 PM - 2:20 PM
Room: Seminar hall
Contributions

1:00 PM TBA - Yu Nakahama

1:40 PM The recent progress from FASER, focusing on the Axion-Like Particle search and Dark Photon search - Daichi Yoshikawa
2:20 PM coffee
coffee
2:20 PM - 2:50 PM
2:50 PM
2:50 PM - 3:50 PM
Room: Seminar hall
Contributions

2:50 PM Three-body entanglement and nonlocality in particle decays - Kazuki Sakurai

3:10 PM An Analytic Prescription for t-channel Singularities - Ryusei Sato

3:30 PM Searching for Leptoquarks at Future Circular Colliders - Christian Heiderijk
2:50 PM - 3:50 PM
Room: meeting room
Contributions

2:50 PM Exploring Lepton Flavor Structures with a Latent Diffusion Model - Haruto Kitagawa

3:10 PM Machine learning the likelihoods - Rafal Maselek

3:30 PM Systematic mapping of $U(1)_{L_{e}-L_{mu}-L_{tau}}$ flavor model via reinforcement learning - Satsuki Nishimura
3:50 PM coffee
coffee
3:50 PM - 4:20 PM
4:20 PM
4:20 PM - 5:20 PM
Room: Seminar hall
Contributions

4:20 PM The Electric Dipole Moment of electron induced by Electroweak Multiplets at full Three-loop - Kiyoto Ogawa

4:40 PM Access to UV information from effective field theories - Hiromasa Takaura

5:00 PM Toponium at the LHC - Ya-Juan Zheng
4:20 PM - 5:20 PM
Room: meeting room
Contributions

4:20 PM A TeV-scale model for neutrino mass, dark matter and baryon asymmetry of the universe and its phenomenology - Sora Taniguchi

4:40 PM Probing Scalar-Mediator Quark Couplings via CLFV Lepton-Nucleon Scattering - Masato Yamanaka
Thursday, February 19, 2026
9:00 AM
9:00 AM - 10:20 AM
Room: Seminar hall
Contributions

9:00 AM New Axion Bounds from Big Bang Nucleosynthesis - Kohsaku Tobioka

9:40 AM Sweeping the pion chimney for axion-like particles with KOTO - Christiane Scherb
10:20 AM coffee
coffee
10:20 AM - 10:40 AM
10:40 AM
10:40 AM - 11:40 AM
Room: Seminar hall
Contributions

10:40 AM Diffuse Multi-messenger Signals of Dark Matter Powered Stars - Tom Schwemberger

11:00 AM MeV-Scale Sterile Neutrino Dark Matter and Future Detection - Subaru Fujisawa
10:40 AM - 11:40 AM
Room: meeting room
Contributions

10:40 AM Constraints on MeV Axion Models from Kaon Decays with KTeV Data - Takaya Iwai

11:00 AM Residual Flavor Symmetries at the Modular Self-Dual Point: Predictive Insights into Neutrino Masses and Mixing - Monal Kashav

11:20 AM Thermal Lepton Oscillations in Leptogenesis - Shaoping Li
11:40 AM

11:40 AM - 1:00 PM
1:00 PM
1:00 PM - 2:20 PM
Room: Seminar hall
Contributions

1:00 PM TBA - Ryusuke Jinno

1:40 PM TBA - Mihoko Nojiri
2:20 PM

2:20 PM - 2:30 PM