K. Kawagoe
A5041236529- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- Renewable energy and sustainable power systems
- Building energy efficiency and sustainability
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Fire dynamics and safety research
- Palliative Care and End-of-Life Issues
- Pregnancy and preeclampsia studies
- Fire effects on concrete materials
- Ovarian cancer diagnosis and treatment
Kyushu University
2015-2024
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2024
University of Toronto
2019-2024
The University of Adelaide
2014-2023
Kobe University
2006-2020
Shandong University
2020
AGH University of Krakow
2012-2019
Institute of Particle Physics
1994-2019
Max Planck Institute for Physics
2019
Technion – Israel Institute of Technology
2017-2018
The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying dielectron or dimuon final states. Results are presented from an analysis of proton-proton (pp) collisions a center-of-mass energy 8 TeV corresponding integrated luminosity 20.3 fb-1 in channel and 20.5 channel. A narrow resonance with Standard Model Z couplings fermions excluded 95% confidence level masses less than 2.79 channel, 2.53 2.90 two channels combined. Limits on other model...
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Doublet Models (2HDMs). data experiments been statistically combined. results are interpreted within 2HDM Type I II benchmark scenarios. No significant excess has observed when compared to Standard Model background prediction, combined exclude large regions model parameter space. Charged with mass below 80 \({\rm GeV}/c^{2}\) (Type scenario) or 72.5 scenario,...
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and electric dipole (EDM) |$d_{\mu}$| at J-PARC facility. The goal of our experiment is |$a_{\mu}$| using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing |$g-2$| experiments unprecedented quality storage field. Additional significant differences from present experimental include 1000 transverse emittance beam...
The energy dependence of the relative production rate three-jet events is studied in hadronic e+e− annihilation at center mass energies between 22 and 46.7 GeV. Three-jet are defined by a jet finding algorithm which closely related to definition resolvable jets used O(αs2) perturbative QCD calculations, where roughly proportional size strong coupling strength. rates data decrease significantly with increasing centre energy. experimental rates, independent fragmentation model can be directly...
An analog hadron calorimeter (AHCAL) prototype of 5.3 nuclear interaction lengths thickness has been constructed by members the CALICE Collaboration. The AHCAL consists a 38-layer sandwich structure steel plates and highly-segmented scintillator tiles that are read out wavelength-shifting fibers coupled to SiPMs. signal is amplified shaped with custom-designed ASIC. A calibration/monitoring system based on LED light was developed monitor SiPM gain measure full response curve in order correct...
Measurements of charged-particle fragmentation functions jets produced in ultra-relativistic nuclear collisions can provide insight into the modification parton showers hot, dense medium created collisions. ATLAS has measured $\sqrt{s_{NN}} = 2.76$ TeV Pb+Pb at LHC using a data set recorded 2011 with an integrated luminosity 0.14 nb$^{-1}$. Jets were reconstructed anti-$k_{t}$ algorithm distance parameter values $R$ 0.2, 0.3, and 0.4. Distributions transverse momentum longitudinal fraction...
The CALICE collaboration is studying the design of high performance electromagnetic and hadronic calorimeters for future International Linear Collider detectors. For calorimeter, current baseline choice a granularity sampling calorimeter with tungsten as absorber silicon detectors sensitive material. A ``physics prototype'' has been constructed, consisting thirty layers. Each layer an active area 18 × cm2 pad size 1 cm2. thickness totals 24 radiation lengths. It exposed in 2006 2007 to...
This paper presents a summary of beam-induced backgrounds observed in the ATLAS detector and discusses methods to tag remove background contaminated events data. Trigger-rate based monitoring beam-related is presented. The correlations with machine conditions, such as residual pressure beam-pipe, are discussed. Results from dedicated beam-background simulations shown, their qualitative agreement data evaluated. Data taken during passage unpaired, i.e. non-colliding, proton bunches used...
Precision physics at future colliders requires highly granular calorimeters to support the Particle Flow Approach for event reconstruction. This article presents a review of about 10 - 15 years R\&D, mainly conducted within CALICE collaboration, this novel type detector. The performance large scale prototypes in beam tests validate technical concept particle flow calorimeters. comparison test data with simulation, e.g.\ hadronic showers, supports full detector studies and gives deeper...
The Technical Design for the COMET Phase-I experiment is presented in this paper. an at J-PARC, Japan, which will search neutrinoless conversion of muons into electrons field aluminium nucleus ($\mu-e$ conversion, $\mu^- N \to e^- N$); a lepton flavor violating process. experimental sensitivity goal process $3.1\times10^{-15}$, or 90 % upper limit branching ratio $7\times 10^{-15}$, factor 100 improvement over existing limit. expected number background events 0.032. To achieve target and...
We propose a new mass reconstruction technique for SUSY processes at the LHC. The idea is to completely solve kinematics of cascade decay by using assumption that selected events satisfy same shell conditions sparticles involved in decay. Using this technique, we study measurement bottom squarks gluino. Based on final state including two high ${p}_{T}$ leptons and $b$-jets, investigate different possible approaches gluino squarks. In particular, evaluate performance algorithms discriminating...
We describe a new caldoactive bacterium, Dictyoglomus thermophilum, which was isolated from slightly alkaline hot spring. This organism is nonsporeforming, nonmotile, obligately anaerobic rod-shaped bacterium that stains gram negative and occurs singly, in pairs, filaments, bundles, as spherical bodies. The cell surface structure of the complex gram-negative type. Large bodies are formed by associations separate rods numbers ranging few to perhaps many 100; these surrounded common outer wall...
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded high granularity calorimeters. Pairs overlaid pion showers from CALICE 2007 beam are reconstructed by PandoraPFA program developed to implement PFA for future lepton collider. Recovery neutral hadron's energy vicinity charged hadron is studied. impact two overlapping on resolution investigated. dependence confusion error distance between 10 GeV and derived...
Abstract The CALICE collaboration is developing highly granular electromagnetic and hadronic calorimeters for detectors at future energy frontier electron-positron colliders. After successful tests of a physics prototype, technological prototype the Analog Hadron Calorimeter has been built, based on design construction techniques scalable to collider detector. consists steel absorber structure active layers small scintillator tiles that are individually read out by directly coupled SiPMs....