Publications (100)
Revisiting Scalar Quark Hidden Sector in Light of 750-GeV Diphoton Resonance
Cheng-Wei Chiang, Masahiro Ibe, Tsutomu T. Yanagida
Constraints on Light Majorana Dark Matter from Colliders
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
Distinguishing Dark Matter Annihilation Enhancement Scenarios via Halo Shapes
Masahiro Ibe, Hai-bo Yu
The swampland conjecture and the Higgs expectation value
Koichi Hamaguchi, Masahiro Ibe, Takeo Moroi
Dark matter annihilation and decay from non-spherical dark halos in the Galactic dwarf satellites
Kohei Hayashi, Koji Ichikawa, Shigeki Matsumoto +3
Muon g-2 and 125 GeV Higgs in Split-Family Supersymmetry
Masahiro Ibe, Tsutomu T. Yanagida, Norimi Yokozaki
Revisiting R-invariant Direct Gauge Mediation
Cheng-Wei Chiang, Keisuke Harigaya, Masahiro Ibe +1
Testing the Minimal Direct Gauge Mediation at the LHC
Koichi Hamaguchi, Masahiro Ibe, Tsutomu T. Yanagida +1
R-symmetry Matching In SUSY Breaking Models
Jessica Goodman, Masahiro Ibe, Yuri Shirman +1
Dynamics of Peccei-Quinn Breaking Field after Inflation and Axion Isocurvature Perturbations
Keisuke Harigaya, Masahiro Ibe, Masahiro Kawasaki +1
750 GeV diphoton resonance in a visible heavy QCD axion model
Cheng-Wei Chiang, Hajime Fukuda, Masahiro Ibe +1
Cracking Down on Fake Photons - A Case of 750 GeV Diphoton Resonance -
Hajime Fukuda, Masahiro Ibe, Osamu Jinnouchi +1
Light Higgsinos in Pure Gravity Mediation
Jason L. Evans, Masahiro Ibe, Keith A. Olive +1
Mixed (Cold+Warm) Dark Matter in the Bino-Wino co-annihilation scenario
Masahiro Ibe, Ayuki Kamada, Shigeki Matsumoto
Upper Bound of Proton Lifetime in Product-Group Unification
Masahiro Ibe, T. Watari
Cosmological Selection of Multi-TeV Supersymmetry
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Pure Gravity Mediation with m_{3/2} = 10-100TeV
Masahiro Ibe, Shigeki Matsumoto, Tsutomu T. Yanagida
Flat Higgs Potential from Planck Scale Supersymmetry Breaking
Masahiro Ibe, Shigeki Matsumoto, Tsutomu T. Yanagida
Probing Extra Matter in Gauge Mediation Through the Lightest Higgs Boson Mass
Jason L. Evans, Masahiro Ibe, Tsutomu T. Yanagida
Dynamical Clockwork Axions
Rupert Coy, Michele Frigerio, Masahiro Ibe
Natural SUSY's Last Hope: R-parity Violation via UDD Operators
Biplob Bhattacherjee, Jason L. Evans, Masahiro Ibe +2
ATLAS on-Z Excess via gluino-Higgsino-singlino decay chains in the NMSSM
Keisuke Harigaya, Masahiro Ibe, Teppei Kitahara
Foreground effect on the $J$-factor estimation of classical dwarf spheroidal galaxies
Koji Ichikawa, Miho N. Ishigaki, Shigeki Matsumoto +4
R-symmetric Axion/Natural Inflation in Supergravity via Deformed Moduli Dynamics
Keisuke Harigaya, Masahiro Ibe, Tsutomu T. Yanagida
Peccei-Quinn Symmetric Pure Gravity Mediation
Jason L. Evans, Masahiro Ibe, Keith A. Olive +1
Mass-Splitting between Haves and Have-Nots (Symmetry vs. Grand Unified Theory)
Keisuke Harigaya, Masahiro Ibe, Motoo Suzuki
Neutralino Dark Matter from MSSM Flat Directions in light of WMAP Result
Masaaki Fujii, Masahiro Ibe
The GeV-scale dark matter with B-L asymmetry
Masahiro Ibe, Shigeki Matsumoto, Tsutomu T. Yanagida
A 125 GeV Higgs Boson Mass and Gravitino Dark Matter in R-invariant Direct Gauge Mediation
Masahiro Ibe, Ryosuke Sato
Constraints on $L_μ-L_Ï$ Gauge Interactions from Rare Kaon Decay
Masahiro Ibe, Wakutaka Nakano, Motoo Suzuki
Revisiting the Minimal Chaotic Inflation Model
Keisuke Harigaya, Masahiro Ibe, Masahiro Kawasaki +1
A Simple Solution to the Polonyi Problem in Gravity Mediation
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Neutralino Dark Matter in Gauge Mediation in Light of CDMS-II
Masahiro Ibe, Tsutomu T. Yanagida
Gauge mediation in supergravity and gravitino dark matter
Masahiro Ibe, Ryuichiro Kitano
Gauged Peccei-Quinn Symmetry - A Case of Simultaneous Breaking of SUSY and PQ Symmetry
Hajime Fukuda, Masahiro Ibe, Motoo Suzuki +1
Revisiting gravitino dark matter in thermal leptogenesis
Masahiro Ibe, Motoo Suzuki, Tsutomu T. Yanagida
Mass Splitting between Charged and Neutral Winos at Two-Loop Level
Masahiro Ibe, Shigeki Matsumoto, Ryosuke Sato
AMS-02 Positrons from Decaying Wino in the Pure Gravity Mediation Model
Masahiro Ibe, Shigeki Matsumoto, Satoshi Shirai +1
Non-Gaussianity from Attractor Curvaton
Keisuke Harigaya, Masahiro Ibe, Masahiro Kawasaki +1
Lower Bound on the Garvitino Mass $m_{3/2}>O(100)$ TeV in $R$-Symmetry Breaking New Inflation
Keisuke Harigaya, Masahiro Ibe, Tsutomu T. Yanagida
A Closer Look at Gaugino Masses in Pure Gravity Mediation Model/Minimal Split SUSY Model
Keisuke Harigaya, Masahiro Ibe, Tsutomu T. Yanagida
Wino Dark Matter and Future dSph Observations
Biplob Bhattacherjee, Masahiro Ibe, Koji Ichikawa +2
Breit-Wigner Enhancement of Dark Matter Annihilation
Masahiro Ibe, Hitoshi Murayama, T. T. Yanagida
Anomaly Mediated Gaugino Mass and Path-Integral Measure
Keisuke Harigaya, Masahiro Ibe
Non-Anomalous Discrete R-symmetry Decrees Three Generations
Jason L. Evans, Masahiro Ibe, John Kehayias +1
$B-L$ as a Gauged Peccei-Quinn Symmetry
Masahiro Ibe, Motoo Suzuki, Tsutomu T. Yanagida
Simplified R-Symmetry Breaking and Low-Scale Gauge Mediation
Jason L. Evans, Masahiro Ibe, Matthew Sudano +1
Imprints of Non-thermal Wino Dark Matter on Small-Scale Structure
Masahiro Ibe, Ayuki Kamada, Shigeki Matsumoto
Peccei-Quinn Symmetry from Dynamical Supersymmetry Breaking
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
CνB absorption line in the neutrino spectrum at IceCube
Masahiro Ibe, Kunio Kaneta
Why three generations?
Masahiro Ibe, Alexander Kusenko, Tsutomu T. Yanagida
Dynamical Chaotic Inflation in the Light of BICEP2
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Cosmic Ray Spectra in Nambu-Goldstone Dark Matter Models
Masahiro Ibe, Hitoshi Murayama, Satoshi Shirai +1
A "Gauged" $U(1)$ Peccei-Quinn Symmetry
Hajime Fukuda, Masahiro Ibe, Motoo Suzuki +1
High-Scale SUSY Breaking Models in light of the BICEP2 Result
Keisuke Harigaya, Masahiro Ibe, Koji Ichikawa +2
Recent Result of the AMS-02 Experiment and Decaying Gravitino Dark Matter in Gauge Mediation
Masahiro Ibe, Sho Iwamoto, Shigeki Matsumoto +2
Sweet Spot Supersymmetry
Masahiro Ibe, Ryuichiro Kitano
Dark Matter Candidates in a Visible Heavy QCD Axion Model
Hajime Fukuda, Masahiro Ibe, Tsutomu T. Yanagida
Wino Dark Matter in light of the AMS-02 2015 Data
Masahiro Ibe, Shigeki Matsumoto, Satoshi Shirai +1
Dynamical Fractional Chaotic Inflation -- Dynamical Generation of a Fractional Power-Law Potential for Chaotic Inflation
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Does Supersymmetry Require Two Higgs Doublets?
Masahiro Ibe, Arvind Rajaraman, Ze'ev Surujon
Focus point gauge mediation in product group unification
Felix Brümmer, Masahiro Ibe, Tsutomu T. Yanagida
A viable supersymmetric model with UV insensitive anomaly mediation
Masahiro Ibe, Ryuichiro Kitano, Hitoshi Murayama
Constraints on Direct Gauge Mediation Models with Complex Representations
Kentaro Hanaki, Masahiro Ibe, Yutaka Ookouchi +1
Constraints on Dark Matter from Colliders
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
Foreground effect on the $J$-factor estimation of ultra-faint dwarf spheroidal galaxies
Koji Ichikawa, Shun-ichi Horigome, Miho N. Ishigaki +4
A Model of Visible QCD Axion
Hajime Fukuda, Keisuke Harigaya, Masahiro Ibe +1
Gravitino Dark Matter and Light Gluino in an R-invariant Low Scale Gauge Mediation
Masahiro Ibe, Ryosuke Sato, Tsutomu T. Yanagida +1
Pure Gravity Mediation of Supersymmetry Breaking at the LHC
Biplob Bhattacherjee, Brian Feldstein, Masahiro Ibe +2
Heavy Squarks and Light Sleptons in Gauge Mediation ~From the viewpoint of 125 GeV Higgs Boson and Muon g-2~
Masahiro Ibe, Shigeki Matsumoto, Tsutomu T. Yanagida +1
Non-Universalities in Pure Gravity Mediation
Jason L. Evans, Keith A. Olive, Masahiro Ibe +1
Relatively Heavy Higgs Boson in More Generic Gauge Mediation
Jason L. Evans, Masahiro Ibe, Tsutomu T. Yanagida
Hypercharged Dark Matter and Direct Detection as a Probe of Reheating
Brian Feldstein, Masahiro Ibe, Tsutomu T. Yanagida
R-axion detection at LHC
Hock-Seng Goh, Masahiro Ibe
One-Loop Anomaly Mediated Scalar Masses and (g-2)_mu in Pure Gravity Mediation
Jason L. Evans, Masahiro Ibe, Keith A. Olive +1
Gamma Ray Line Constraints on Effective Theories of Dark Matter
Jessica Goodman, Masahiro Ibe, Arvind Rajaraman +3
Thermal Relic Dark Matter Beyond the Unitarity Limit
Keisuke Harigaya, Masahiro Ibe, Kunio Kaneta +2
Phase Locked Inflation -- Effectively Trans-Planckian Natural Inflation
Keisuke Harigaya, Masahiro Ibe
Cascade supersymmetry breaking and low-scale gauge mediation
Masahiro Ibe, Yuri Shirman, Tsutomu T. Yanagida
The Lightest Higgs Boson Mass in Pure Gravity Mediation Model
Masahiro Ibe, Tsutomu T. Yanagida
The Peccei-Quinn Symmetry from a Gauged Discrete R Symmetry
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Chaotic Inflation with a Fractional Power-Law Potential in Strongly Coupled Gauge Theories
Keisuke Harigaya, Masahiro Ibe, Kai Schmitz +1
Nambu-Goldstone Dark Matter and Cosmic Ray Electron and Positron Excess
Masahiro Ibe, Yu Nakayama, Hitoshi Murayama +1
Viable Supersymmetry and Leptogenesis with Anomaly Mediation
Masahiro Ibe, Ryuichiro Kitano, Hitoshi Murayama +1
Minimal Direct Gauge Mediation
Masahiro Ibe, Ryuichiro Kitano
Seesaw Mechanism with Occam's Razor
Keisuke Harigaya, Masahiro Ibe, Tsutomu T. Yanagida
Universality in Pure Gravity Mediation
Jason L. Evans, Masahiro Ibe, Keith A. Olive +1
Diboson Resonance as a Portal to Hidden Strong Dynamics
Cheng-Wei Chiang, Hajime Fukuda, Keisuke Harigaya +2
The Lightest Higgs Boson Mass in the MSSM with Strongly Interacting Spectators
Jason L. Evans, Masahiro Ibe, Tsutomu T. Yanagida
Supersymmetric Model Building (and Sweet Spot Supersymmetry)
Masahiro Ibe, Ryuichiro Kitano
Spontaneous thermal Leptogenesis via Majoron oscillation
Masahiro Ibe, Kunio Kaneta
A 125GeV Higgs Boson and Muon g-2 in More Generic Gauge Mediation
Jason L. Evans, Masahiro Ibe, Satoshi Shirai +1
Mass of Decaying Wino from AMS-02 2014
Masahiro Ibe, Shigeki Matsumoto, Satoshi Shirai +1
A Gauge-Mediation Model with a Light Gravitino of Mass O(10) eV and the Messenger Dark Matter
Masahiro Ibe, Kazuhiro Tobe, Tsutomu Yanagida
Lower limit on the gravitino mass in low-scale gauge mediation with $m_H\simeq 125$GeV
Masahiro Ibe, Tsutomu T. Yanagida
Composite Asymmetric Dark Matter with a Dark Photon Portal
Masahiro Ibe, Ayuki Kamada, Shin Kobayashi +1
Simple realization of inflaton potential on a Riemann surface
Keisuke Harigaya, Masahiro Ibe
Sweet Spot Supersymmetry and Composite Messengers
Masahiro Ibe, Ryuichiro Kitano
Small steps towards Grand Unification and the electron/positron excesses in cosmic-ray experiments
Masahiro Ibe
Coupling Unification and Dark Matter in a Standard Model Extension with Adjoint Majorana Fermions
Tasuku Aizawa, Masahiro Ibe, Kunio Kaneta