A5048335187- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Quantum Chromodynamics and Particle Interactions
- Computational Physics and Python Applications
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Quantum and Classical Electrodynamics
- DNA Repair Mechanisms
- Galaxies: Formation, Evolution, Phenomena
- Advanced Algebra and Geometry
- Distributed and Parallel Computing Systems
- Microtubule and mitosis dynamics
- Algebraic and Geometric Analysis
- Scientific Research and Discoveries
- Algebraic structures and combinatorial models
- Advanced Topics in Algebra
Institute of Modern Physics
2021-2023
Zhejiang University
2021-2023
Tohoku University
2016-2022
High Energy Accelerator Research Organization
2020-2021
Istituto Nazionale di Fisica Nucleare
2015-2016
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2015-2016
The University of Tokyo
2010-2015
Kavli Institute for the Physics and Mathematics of the Universe
2012-2015
Hiroshima University
2007-2010
Abstract is a flexible open-source tool which, given the Standard Model or any of its extensions, allows to (i) fit model parameters set experimental observables; (ii) obtain predictions for observables. can be used either in Monte Carlo mode, perform Bayesian Markov Chain analysis model, as library, observables point parameter space allowing statistical framework. In present version, around thousand have been implemented and several new physics scenarios. this paper, we describe general...
We study the muon anomalous magnetic moment (muon g-2) and Higgs boson mass in a simple extension of minimal supersymmetric (SUSY) Standard Model with extra vector-like matters, frameworks gauge mediated SUSY breaking (GMSB) models gravity mediation (mSUGRA) models. It is shown that deviation g-2 relatively heavy can be simultaneously explained large tan-beta region. (i) In GMSB models, more than 135 GeV (130 GeV) region where consistent experimental value at 2 sigma (1 sigma) level, while...
Recently the ATLAS and CMS collaborations presented preliminary results of standard model Higgs searches reported excesses events for a boson at 124--126 GeV. Such mass can be naturally realized, simultaneously explaining muon $g\ensuremath{-}2$ anomaly, in gauge-mediated SUSY-breaking models with extra vectorlike matters. Upper bounds are obtained on gluino mass, ${m}_{\stackrel{\texttildelow{}}{g}}\ensuremath{\lesssim}1.2(1.8)\text{ }\text{ }\mathrm{TeV}$, quark...
We propose a scenario where only the Higgs multiplets have direct couplings to supersymmetry (SUSY) breaking sector. The standard model matter as well gauge multiples are sequestered from SUSY sector; therefore, their masses arise via anomaly mediation at high energy scale with gravitino mass of $\sim$100 TeV. Due renormalization group running effects soft masses, third generation sfermions become O(10) TeV low scale, while first and second sfermion O(0.1-1) TeV, avoiding tachyonic slepton...
The recent observation of an excess in the electronic recoil data by XENON1T detector has drawn many attentions as a potential hint for extension Standard Model (SM). Absorption vector boson with mass mA′∈(2keV,3keV) is one feasible explanations to excess. In case where explains dark matter (DM) population today, it highly probable that belongs class warm (WDM) due its suspected regime. such scenario, providing good fit excess, kinetic mixing κ∼10−15 asks non-thermal origin DM. this letter,...
In this letter, we show that the wino-Higgsino dark matter (DM) is detectable in near future DM direct detection experiments for almost all consistent parameter space spontaneously broken supergravity (SUGRA) if muon g−2 anomaly explained by loop diagrams. We also point out present and LHC can exclude or confirm SUGRA explanation of observed anomaly.
We reconsider the fine-tuning problem in SUSY models, motivated by recent observation of relatively heavy Higgs boson and non-observation particles at LHC. Based on this thought, we demonstrate a focus point-like behavior gaugino mediation model, show that is indeed reduced to about 2 percent level if ratio gluino mass wino 0.4 GUT scale. such may arise naturally product group unification model without doublet-triplet splitting problem. This fact suggests crucially depends physics high energy
We study phenomenological aspects of the MSSM with extra U(1) gauge symmetry. find that lightest Higgs boson mass can be increased up to 125 GeV, without introducing a large SUSY scale or A-terms, in frameworks CMSSM and mediated breaking (GMSB) models. This scenario simultaneously explain discrepancy muon anomalous magnetic moment (muon g-2) at 1 sigma level, both frameworks, U(1)-extended CMSSM/GMSB In case, dark matter abundance also explained.
We evaluate the impact of domain-wall annihilation on currently ongoing and planned gravitational wave experiments, including a case in which domain walls experience frictional force due to interactions with ambient plasma. show sensitivity reach terms physical parameters, namely, wall tension temperature. find that Higgs portal scalar, stabilizes potential at high energy scales, can form whose produces large amount waves within advanced LIGO experiment (O5). Domain also generate baryon...
We show that the axion coupling to photons can be enhanced in simple models with a single Peccei-Quinn field, if gauge unification is realized by large kinetic mixing $χ= {\cal O}(0.1)$ between hypercharge and unbroken hidden U(1)$_H$. The key observation U(1)$_H$ should rather strong induce such mixing, leading contributions of matter fields electromagnetic anomaly. find axion-photon about factor 10-100 respect GUT-axion $E/N = 8/3$.
We explore the potential of neutralino dark matter within framework gauge-mediated supersymmetry (SUSY) breaking. In our models, lightest neutralino, as SUSY particle (LSP), is a viable candidate, assuming gravitino mass $\mathcal{O}(100)~\mathrm{TeV}$. The models are formulated in five-dimensional space-time, where breaking field and fields placed on separate branes to avoid issues related flavor CP violation. Four distinct scenarios studied: bino-wino coannihilation, higgsino matter, wino...
Abstract We propose a grand unified model in five dimensions that addresses the strong CP problem. In this framework, boundary conditions break gauge group into Standard Model simultaneously explain mass splitting of new matter content required for coupling unification and emergence QCD axion as $$U(1)_\textrm{PQ}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>U</mml:mi> <mml:msub> <mml:mo>(</mml:mo> <mml:mn>1</mml:mn> <mml:mo>)</mml:mo> </mml:mrow>...
We consider a simple setup with light squarks which is free from the gravitino and SUSY flavor problems. In our setup, breaking sector sequestered matter gauge sectors, it only couples to Higgs directly $\mathcal{O}(100)\,$TeV gravitino. Resulting mass spectra of sfermions are split: first second generation as $\mathcal{O}(1)\,$TeV while third heavy $\mathcal{O}(10)\,$TeV. The can be searched at (high-luminosity) LHC future collider experiments. Our scenario naturally avoid too large...
The 750 GeV diphoton excess reported by ATLAS and CMS indicates the presence of several pairs vectorlike matter multiplets around TeV scale. If that is case, radiative corrections from $SU(3)$ gauge interaction significantly change those minimal supersymmetric standard model, infrared-free nature leads to characteristic supersymmetry mass spectra: a ratio squark gluino mass, scalar trilinear couplings are enhanced at low-energy Consequently, even in gaugino mediation models, Higgs boson 125...
A bstract We present a model describing the dark sector (DS) featured by two interactions remaining efficient until late times in matter-dominated era after recombination: interaction among radiations (DR), and between small fraction of matter radiation. The consists (1) dominant component cold collisionless DM (DM1), (2) sub-dominant (DM2) (3) self-interacting DR. When sufficient amount DR is ensured few percent total density contributed DM2 interacting with DR, this set-up known to be able...
Gaugino mediation is very attractive since it free from the serious flavor problem in supersymmetric standard model. We show that observed Higgs boson mass at around 125 GeV and anomaly of muon $g\ensuremath{-}2$ can be easily explained gaugino models. It should noted no dangerous CP violating phases are generated our framework. Furthermore, there large parameter regions which tested not only planned International Linear Collider but also coming 13--14 TeV Large Hadron Collider.
We present a gauge mediated supersymmetry breaking model having weak SU(2) triplet, color SU(3) octet and SU(5) 5-plet messengers, that can simultaneously explain the muon $(g-2)$ data within 1$\sigma$ observed Higgs boson mass of 125 GeV. Gauge coupling unification is nontrivially maintained. Most parameter space satisfying both accessible to 14 TeV LHC. The lighter two staus weighs around (100-200) GeV, which be potential target ILC.
The Higgs boson of 125 GeV requires large stop masses, leading to the $\mu$-parameter in most cases gauge mediation. On other hand, explanation for muon $g-2$ anomaly needs small slepton and neutralino/chargino masses. Such disparity masses may be obtained from a mass splitting colored non-colored messenger fields. However, even if required are realized, all parameter regions consistent with g-2 excluded by recent updated ATLAS result on wino search case that fields ${\bf 5}+\bar {\bf 5}$...
We propose a CP-safe gravity mediation model, where the phases of Higgs B parameter, scalar trilinear couplings and gaugino mass parameters are all aligned. Since dangerous CP violating suppressed, we now safe to consider low-energy SUSY scenarios. As an application, model explaining observed muon $g-2$ anomaly. The property originates in two simple assumptions: breaking K\"ahler potential shift symmetry field $Z$. result symmetry, imaginary part $Z$ behaves as QCD axion, leading intriguing...
We reexamine the models with gauge mediation in view of minimality and Higgs boson mass. As a result, we arrive at very simple model direct which does not suffer from flavor problems nor $CP$ problems. The minimal supersymmetric Standard Model spectrum is determined by only three parameters, size effective supersymmetry breaking, messenger scale, number. Surprisingly, such consistent all current constraints but also testable upgraded LHC experiments. In particular, show that parameter space...