A5101725743- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Black Holes and Theoretical Physics
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Algorithms and Data Compression
- Cold Atom Physics and Bose-Einstein Condensates
- Ginseng Biological Effects and Applications
- Education and Learning Interventions
- Nuclear physics research studies
- Minimally Invasive Surgical Techniques
- Analytic Number Theory Research
- Advanced optical system design
- Educational Systems and Policies
- ATP Synthase and ATPases Research
- Metastasis and carcinoma case studies
- Distributed and Parallel Computing Systems
- Reconstructive Surgery and Microvascular Techniques
- Advanced Optical Imaging Technologies
- Cosmology and Gravitation Theories
- MicroRNA in disease regulation
- advanced mathematical theories
- Computational Physics and Python Applications
- Neurogenesis and neuroplasticity mechanisms
Chung-Ang University
2024-2025
Seoul National University Bundang Hospital
2024
Korea Institute for Advanced Study
2024
Soochow University
2022-2023
Jeonbuk National University
2019-2022
Kyung Hee University
2010
Samsung (South Korea)
2003
We conduct a combined analysis to investigate dark matter (DM) with hypercharge anapole moments, focusing on scenarios where Majorana DM particles spin <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>1</a:mn><a:mo>/</a:mo><a:mn>2</a:mn></a:mrow></a:math>, 1, <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mn>3</c:mn><c:mo>/</c:mo><c:mn>2</c:mn></c:mrow></c:math>, and 2 interact exclusively Standard Model through <e:math...
Cognitive impairment can be associated with reduced adult hippocampal neurogenesis, and it may contribute to age-associated neurodegenerative diseases such as Alzheimer’s (AD). Compound K (CK) is produced from the protopanaxadiol (PPD)-type ginsenosides Rb1, Rb2, Rc by intestinal microbial conversion. Although CK has been reported an inducing effector for neuroprotection improved cognition in hippocampus, its effect on neurogenesis not explored yet. Here, we investigated of both young (2...
The well-known Landau-Yang (LY) theorem on the decay of a neutral particle into two photons is generalized for analyzing or charged identical massless particles any spin. Selection rules categorized by discrete parity invariance and Bose/Fermi symmetry are worked out in helicity formulation. general form Lorentz-covariant triple vertices derived corresponding amplitudes explicitly calculated Jacob-Wick convention. After checking consistency all analytic results obtained complementary...
Abstract We develop an effective and methodical algorithm for the construction of general covariant four-point $$H\ell \ell Z$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>H</mml:mi> <mml:mi>ℓ</mml:mi> <mml:mi>Z</mml:mi> </mml:mrow> </mml:math> vertices, accommodating leptons $$\ell =e, \mu $$ <mml:mo>=</mml:mo> <mml:mi>e</mml:mi> <mml:mo>,</mml:mo> <mml:mi>μ</mml:mi> , designed to handle a boson H any integer spin, not merely confined spins up 2. While our...
An efficient algorithm is developed for compactly weaving all the Lorentz covariant three-point vertices in relation to decay of a massive particle $X$ mass $m_X$ and spin $J$ into two particles $ M_{1,2}$ with equal $m$ $s$. The closely-related equivalence between helicity formalism formulation utilized so as identify basic building blocks constructing vertex corresponding each combination explicitly. massless case $m=0$ worked out straightforwardly (anti)symmetrization required by...
An algorithm is developed for efficiently constructing the Lorentz covariant effective three-point vertices of decay a particle into two daughter particles in which all masses and spins three can be arbitrary. The closely related one-to-one correspondence between helicity formalism formulation exploited counting number independent terms identifying basic vertices. Assembling operators according to enables us construct systematically.
We perform a comprehensive and model-independent analysis for characterizing the spin dynamical structure of production nondiagonal pair Majorana particles with different masses arbitrary spins ${e}^{\ensuremath{-}}{e}^{+}\ensuremath{\rightarrow}{X}_{2}{X}_{1}$, followed by sequential two-body decay ${X}_{2}\ensuremath{\rightarrow}Z{X}_{1}$ heavier particle ${X}_{2}$ into $Z$ gauge boson lighter ${X}_{1}$ escaping undetected at high-energy ${e}^{+}{e}^{\ensuremath{-}}$ colliders. Standard...
A general and comprehensive analysis for the vector currents of two massive particles, $X_2$ $X_1$, with arbitrary integer-spin values is given. Our special focus on case when particles are charge self-conjugate, i.e. Majorana bosons. The structure their couplings to an on-shell or off-shell boson $V$ described in a manifestly covariant way then constraints triple vertex due discrete CP symmetry condition being worked out. validity our full analytic investigation checked by studying two-body...
We present an efficient algorithm for constructing all the matrix elements of covariant tensor currents massless particles arbitrary spins in formulation. The construction can be taken simply by assembling basic which are derived from three-point vertices. obtain selection rules decay off-shell massive particle into two identical generalization Landau-Yang (LY) theorem. After showing how to identify fully discontinuity between spacelike and lightlike momentum transfers, we derive conserved...
Determining the spin of any new particle and measuring its couplings to other particles and/or itself are crucial in reconstructing structure quantum field theory containing particle. A general helicity formalism is employed describe polarization $Y$ a two-body decay $X_2\to Y X_1$ with polarized $X_2$ for purpose diagnosing dynamical properties three involved determining their spins altogether. We perform comprehensive analytic analysis our special focus on grasping fully how connect...
The architecture and circuit design of a single panel liquid crystal on silicon (LCoS) backplane IC that includes 1408 /spl times/ 844 pixels drives 8 color sub-frames/one video frame is described. There are DACs to improve picture uniformity one analog buffer reduce bandwidth. Each pixel has 256 gray levels 12 mu/m pitch. IC, fabricated in UMC 0.35 5M LCoS technology, used successfully projection applications.