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)

Monday, 16 February 2026

10:00

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

10:10 Quantum Machine Learning for High-Energy Physics - Michael Spannowsky

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

11:30 - 13:00
13:00
13:00 - 14:20
Room: Seminar hall
Contributions

13:00 Current Status and Future Prospects of Belle II - Yu Nakazawa

13:40 B physics: known and unknown - Zoltan Ligeti
14:20 coffee
coffee
14:20 - 14:40
14:40
14:40 - 15:20
Room: Seminar hall
Contributions

14:40 The EIC and ePIC Experiments: Current Status and Synergies with High-Energy Physics - Kentaro Kawade
15:20 coffee
coffee
15:20 - 16:30
16:30
16:30 - 17:30
Room: Seminar hall
Contributions

16:30 Walking-Dilaton Hybrid Inflation in a Model with Dynamical Scalegenesis - HIROYUKI ISHIDA

16:50 Emission of Nambu-Goldstone bosons from semilocal string networks - Yukihiro Kanda

17:10 Relaxing Cosmological Constraints on the Minimal $U(1)_{L_\mu - L_\tau}$ Model with One-Loop Corrections - Jun Miyamoto
16:30 - 17:30
Room: meeting room
Contributions

16:30 Higgs production in association with a Z boson at TeV-scale lepton colliders - Hiroyuki Furusato

16:50 Chasing Long-lived Scalars at the Future Lepton Colliders - Nivedita Ghosh

17:10 Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders - Keisho Hidaka
17:30

17:30 - 19:30
Tuesday, 17 February 2026
09:00
09:00 - 10:20
Room: Seminar hall
Contributions

09:00 Searching for dark matter in the gamma-ray sky - Shunsaku Horiuchi

09:40 A brief overview of ACT DR6 results - Toshiya Namikawa
10:20 coffee
coffee
10:20 - 10:40
10:40
10:40 - 11:40
Room: Seminar hall
Contributions

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

11:00 Supersymmetric Gauge Theories with Confining Phases - Riku Ishikawa
10:40 - 11:40
Room: meeting room
Contributions

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

11:00 Screening Effects of Finite-Mass Fermions in Monopole Baryogenesis Scenario - Yukito Kato
11:40

11:40 - 13:00
13:00
13:00 - 14:20
Room: Seminar hall
Contributions

13:00 Extended Higgs sectors and a scenario of electroweak baryogenesis - Shinya Kanemura

13:40 Testable leptogenesis with three right-handed neutrinos - Yannis Georis
14:20 photo, coffee
photo, coffee
14:20 - 14:50
14:50
14:50 - 16:10
Room: Seminar hall
Contributions

14:50 Phenomenology of electroweakly interacting spin-1 dark matter with Sommerfeld enhancement - Tomohiro Abe

15:10 Minimal Dark Matter in the sky: updated Indirect Detection probes - Mohammad Aghaie

15:30 Dark matter explanations for the neutrino emission from the Seyfert galaxy NGC 1068 - Kensuke Akita

15:50 Light neutrinophilic thermal dark matter - Tatsuya Aonashi
14:50 - 16:10
Room: meeting room
Contributions

14:50 Two Higgs doublet models with a new U(1) gauge symmetry - Takaaki Nomura

15:10 Testing the Higgs triplet model via 125GeV Higgs boson decays with radiative corrections - Kodai Sakurai

15:30 Probing spontaneous CP-violation through precision Higgs observables - Kei Yagyu
16:10 coffee
coffee
16:10 - 16:40
16:40
16:40 - 17:40
Room: Seminar hall
Contributions

16:40 Forbidden Dark Matter with Sommerfeld Enhancement - Takumu Yamanaka

17:00 Asymmetric Dark Matter from Low-Scale Spontaneous Leptogenesis - Hiroki Takahashi
16:40 - 17:40
Room: meeting room
Contributions

16:40 Possible scenarios for baryogenesis in the presence of a lepton number violating operator in the rare meson decays - Yushi Mura

17:00 Rare meson decay constraints on dark photon and the like - Osamu Seto

17:20 Radiative Corrections to $D_s \to \ell \nu$ and CKM Unitarity Test - Kota Sasaki
Wednesday, 18 February 2026
09:00
09:00 - 10:20
Room: Seminar hall
Contributions

09:00 Advancing Standards in Early Universe Physics: The Impact of Bound States & Thermal Effects - Julia Harz

09:40 Cutting rule for cosmological correlators and its applications - Yohei Ema
10:20 coffee
coffee
10:20 - 10:40
10:40
10:40 - 11:40
Room: Seminar hall
Contributions

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

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

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

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

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

11:40 - 13:00
13:00
13:00 - 14:20
Room: Seminar hall
Contributions

13:00 Selected highlights from the LHC-ATLAS experiment - Yu Nakahama

13:40 The recent progress from FASER, focusing on the Axion-Like Particle search and Dark Photon search - Daichi Yoshikawa
14:20 coffee
coffee
14:20 - 14:50
14:50
14:50 - 15:50
Room: Seminar hall
Contributions

14:50 Three-body entanglement and nonlocality in particle decays - Kazuki Sakurai

15:10 An Analytic Prescription for t-channel Singularities - Ryusei Sato

15:30 Searching for Leptoquarks at Future Circular Colliders - Christian Heiderijk
14:50 - 15:50
Room: meeting room
Contributions

14:50 Exploring Lepton Flavor Structures with a Latent Diffusion Model - Haruto Kitagawa

15:10 Machine learning the likelihoods - Rafal Maselek

15:30 Systematic mapping of $U(1)_{L_{e}-L_{mu}-L_{tau}}$ flavor model via reinforcement learning - Satsuki Nishimura
15:50 coffee
coffee
15:50 - 16:20
16:20
16:20 - 17:20
Room: Seminar hall
Contributions

16:20 The Electric Dipole Moment of electron induced by Electroweak Multiplets at full Three-loop - Kiyoto Ogawa

16:40 Gradient-flowed operator product expansion without IR renormalons - Hiromasa Takaura

17:00 Toponium at the LHC - Ya-Juan Zheng
16:20 - 17:20
Room: meeting room
Contributions

16:20 A TeV-scale model for neutrino mass, dark matter and baryon asymmetry of the universe and its phenomenology - Sora Taniguchi

16:40 Probing Scalar-Mediator Quark Couplings via CLFV Lepton-Nucleon Scattering - Masato Yamanaka
Thursday, 19 February 2026
09:00
09:00 - 10:20
Room: Seminar hall
Contributions

09:00 New Axion Bounds from Big Bang Nucleosynthesis - Kohsaku Tobioka

09:40 Sweeping the pion chimney for axion-like particles with KOTO - Christiane Scherb
10:20 coffee
coffee
10:20 - 10:40
10:40
10:40 - 11:40
Room: Seminar hall
Contributions

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

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

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

11:00 Thermal Lepton Oscillations in Leptogenesis - Shaoping Li
11:40

11:40 - 13:00
13:00
13:00 - 14:20
Room: Seminar hall
Contributions

13:00 First-order phase transitions in the early Universe: Recent theoretical/experimental progress - Ryusuke Jinno

13:40 How LLM can help particle physicists - Mihoko Nojiri
14:20

14:20 - 14:30