A5078016718- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Advanced Thermoelectric Materials and Devices
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Advanced Sensor and Energy Harvesting Materials
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- Superconducting Materials and Applications
- Microfluidic and Capillary Electrophoresis Applications
- GaN-based semiconductor devices and materials
- Distributed and Parallel Computing Systems
- Thermal Radiation and Cooling Technologies
- Graphene research and applications
- Innovative Microfluidic and Catalytic Techniques Innovation
- 3D Printing in Biomedical Research
- Algorithms and Data Compression
- Innovative Energy Harvesting Technologies
Yonsei University
2015-2024
Korea National University of Cultural Heritage
2023
Dongshin University
2019-2022
Korea Advanced Institute of Science and Technology
1983-2020
Kyungil University
2018
Korea Institute of Science & Technology Information
2017
University of Liège
2017
Uppsala University
2017
University of Arizona
2017
Pennsylvania State University
2017
This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (Search Hidden Particles) experiment is intended to hunt in largely unexplored domain of very weakly interacting particles with masses below Fermi scale, inaccessible LHC experiments, and study tau neutrino physics. same proton beam setup can be used later look decays tau-leptons lepton flavour number non-conservation, $\tau\to 3\mu$ search weakly-interacting sub-GeV dark matter candidates. We discuss...
In this paper, we propose a generalized serial dilution module for universal microfluidic concentration gradient generators including N cascaded-mixing stages in stepwise manner. Desired concentrations were generated by means of controlled volumetric mixing ratios two merging solutions each stage. The flow rates adjusted controlling channel length, which is proportional to fluidic resistance channel. A mathematical model generating any complex and output rate gradients presented based on the...
The focus of this paper lies on the possible experimental tests leptogenesis scenarios. We consider both generated from oscillations, as well out-of-equilibrium decays. As Akhmedov–Rubakov–Smirnov (ARS) mechanism allows for heavy neutrinos in GeV range, opens up a plethora tests, e.g. at neutrino oscillation experiments, neutrinoless double beta decay, and direct searches neutral leptons future facilities. In contrast, testing decays is quite difficult task. comment necessary conditions...
V-defect formation of the InxGa1−xN/GaN multiple quantum wells (MQWs) grown on GaN layers with different threading dislocation (TD) densities was investigated. From cross-sectional transmission electron microscopy, we found that all V defects are not always connected TDs at their bottom. By increasing indium composition in InxGa1−xN well layer or decreasing TD density thick layer, many generated from stacking mismatch boundaries induced by faults which formed within MQW due to strain...
We study lepton number violating decays of charged $K$, $D$, ${D}_{s}$, $B$, and ${B}_{c}$ mesons the form ${M}^{+}\ensuremath{\rightarrow}{M}^{\ensuremath{'}\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{+}$, induced by existence Majorana neutrinos. These processes provide information complementary to neutrinoless double nuclear beta decays, are sensitive neutrino masses mixing. explore mass ranges ${m}_{N}$ from below 1 eV several hundred GeV. find that in many cases branching...
We use the LHC Higgs data to derive updated constraints on electroweak-scale sterile neutrinos that naturally occur in many low-scale seesaw extensions of Standard Model explain neutrino masses. also analyze signal sensitivity for a new final state involving single charged lepton and two jets with missing energy, which arises from decay produced through $W,Z$ boson mediated processes at LHC. Future prospects these signals precision measurements, as well future 100 TeV collider, are discussed.
Abstract Thermal perception is essential for the survival and daily activities of people. Thus, it desirable to realize thermal feedback stimulation improving sense realism in virtual reality (VR) users. For stimulus, conventional systems utilize liquid circulation with bulky external sources or thermoelectric devices (TEDs) on rigid structures. However, these are difficult apply compact wearable gear used complex hand motions interact VR. Furthermore, generating a rapid temperature...
Some of the outstanding questions particle physics today concern neutrino sector, in particular whether there are more neutrinos than those already known and they Dirac or Majorana particles. There different ways to explore these issues. In this article we describe neutrino-mediated decays charged pseudoscalar mesons such as π±,K± B±, scenarios where extra heavy can be on their mass shell. We discuss semileptonic leptonic kinds. investigate possible using order distinguish between character...
We evaluate the prompt atmospheric neutrino flux at high energies using three different frameworks for calculating heavy quark production cross section in QCD: NLO perturbative QCD, k T factorization including low-x resummation, and dipole model parton saturation. use QCD parameters, value charm mass range renormalization scales that provide best description of total measured fixed target experiments, RHIC LHC. Using these parameters we calculate differential sections bottom compare with...
In a scenario with two almost mass degenerate heavy sterile Majorana neutrinos $\ensuremath{\sim}1\text{ }\text{ }\mathrm{GeV}$, we present the semileptonic decay widths of charged pseudoscalars such as $B$ mesons, either lepton number violating (${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ifmmode\pm\else\textpm\fi{}}{e}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$), or conserving...
We study the purely leptonic decays of $W^\pm \to e^\pm μ^\mp ν$ and $μ^\pm μ^\pm e^\mp produced at LHC, induced by sterile neutrinos with mass $m_N$ below $M_W$ in intermediate state. Since final state neutrino escapes detection, one cannot tell whether this process violates lepton number, what would indicate a Majorana character for neutrino. Our shows that when mixings electrons muons are different enough, can still discriminate between Dirac simply counting comparing above decay rates....
The decay constants of pseudoscalar heavy mesons $0^-$ state are computed by means the relativistic (instantaneous) Salpeter equation. We solved full equation without making any further approximation, such as ignoring small component wave function. Therefore, our results for include complete contributions from light and quarks. obtain $F_{D_s} \approx 248 \pm 27 $, $F_{D} 230 25 (D^0,D^\pm)$, $F_{B_s} 216 32 $F_{B} 196 29 (B^0,B^\pm)$, $F_{B_c} 322 42 $ $F_{\eta_c} 292 MeV.
A simultaneous analytical method for 237Np, 239Pu and 240Pu has been developed using sector field inductively coupled plasma mass spectrometry (ICP-SF-MS) detection combined with an automated sequential injection (SI) separation system. The chemical purification of these actinides was carried out on actinide-specific extraction chromatographic resin, TEVA-Spec, in SI similar behaviors Np Pu TEVA-Spec confirmed by recovery test after treating ascorbic acid 5 M HNO3. maintained its...
The average kinetic energy of the heavy quark inside B or D meson is computed by means instantaneous Bethe–Salpeter method. We first solve relativistic Salpeter equation and obtain wave function mass 0− state, then we use to calculate state. find that corrections are quite large cannot be ignored. estimate μ2π(=−λ1)≈0.24(B0,B±), 0.20(D0,D±), 0.33(Bs), 0.26(Ds), 0.83(Bc) 0.62(ηc) GeV2.
The updated CDF measurement of the forward-backward asymmetry (FBA) in top quark production p{bar p} -> t{bar t} at Tevatron (with CMS energy 1.96 TeV) shows a deviation 2*sigma from value predicted by Standard QCD Model. We present calculation this quantity scenario where colored unparticle physics contributes to s-channel process, and obtain regions plane parameters lambda dU which give values FBA total cross section compatible with measurements.
We study the $CP$ violation in lepton-number-violating meson decays ${M}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\ell}}_{1}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\ell}}_{2}^{\ifmmode\pm\else\textpm\fi{}}{M}^{\ensuremath{'}\ensuremath{\mp}}$, where $M$ and ${M}^{\ensuremath{'}}$ are pseudoscalar mesons, $M=K,D,{D}_{s},B,{B}_{c}$ ${M}^{\ensuremath{'}}=\ensuremath{\pi},K,D,{D}_{s}$, charged leptons...