A5060430961- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Radio Astronomy Observations and Technology
- Radiation Detection and Scintillator Technologies
- Superconducting and THz Device Technology
- Muon and positron interactions and applications
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Distributed and Parallel Computing Systems
- Advanced NMR Techniques and Applications
- Galaxies: Formation, Evolution, Phenomena
- Advanced Data Storage Technologies
- Medical Imaging and Pathology Studies
Johns Hopkins University
2025
Korea University
2015-2024
Tohoku University
2024
Institute for Basic Science
1999-2024
University of Cincinnati
2013-2019
University of the Basque Country
2013-2019
Beihang University
2016-2019
Duke University
2019
Chonnam National University
2018-2019
Karlsruhe Institute of Technology
2019
The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade is under construction, to increase luminosity by two orders magnitude during a three-year shutdown, with ultimate goal 8E35 /cm^2 /s luminosity. To exploit increased luminosity, been proposed. A new international collaboration Belle-II, being formed. Technical Design Report presents physics motivation, basic methods accelerator upgrade, as...
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...
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
We present a measurement of the charmless semileptonic decay $B^0\to\pi^-\ell^+\nu$ using data sample containing 657$\times 10^6$ $B\bar{B}$ events collected with Belle detector at KEKB asymmetric-energy $e^+e^-$ collider operating near $\Upsilon(4S)$ resonance. determine total branching fraction decay, $\mathcal{B}(B^0\to\pi^-\ell^+\nu)=(1.49\pm 0.04{(\mathrm{stat})}\pm 0.07{(\mathrm{syst})})\times 10^{-4}$. also report new precise differential rate, and extract Cabibbo-Kobayashi-Maskawa...
The interference fragmentation function translates the of a quark with transverse projection spin into an azimuthal asymmetry two final-state hadrons. In e+e- annihilation product functions is measured. We report nonzero asymmetries for pairs charge-ordered pi+pi- pairs, which indicate significant in this channel. results are obtained from 672 fb-1 data sample that contains 711 \times 106 and was collected at near ?(4S) resonance, Belle detector KEKB asymmetric-energy collider.
Emission of muonium (|$\mu ^+e^-$|) atoms from a laser-processed aerogel surface into vacuum was studied for the first time. Laser ablation used to create hole-like regions with diameter about 270 |$\mu $|m in triangular pattern hole separation range 300–500 $|m. The emission probability sample is at least eight times higher than uniform one.
We have searched for $CP$ violation in the charmed meson decays ${D}_{(s)}^{+}\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{+}$ and ${D}_{(s)}^{+}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}$ using $673\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected with Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. No evidence is observed. report most sensitive asymmetry measurements to date these decays:...
We observe evidence for CP violation in the decay D+ → K(S)(0)π+ using a data sample with an integrated luminosity of 977 fb(-1) collected by Belle detector at KEKB e+ e- asymmetric-energy collider. The asymmetry is measured to be (-0.363±0.094±0.067)%, which 3.2 standard deviations away from zero, and consistent expected due neutral kaon final state.
We present measurements of the masses and decay widths baryonic states ${\mathrm{\ensuremath{\Sigma}}}_{c}(2455{)}^{0/++}$ ${\mathrm{\ensuremath{\Sigma}}}_{c}(2520{)}^{0/++}$ using a data sample corresponding to an integrated luminosity $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with Belle detector at KEKB ${e}^{+}{e}^{\ensuremath{-}}$ asymmetric-energy collider operating $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance. report mass differences respect...
We examine the effect of difference in nuclear interactions ${K}^0$ and $\bar{K}^0$ mesons on measurement CP asymmetry for experiments at $e^+e^-$ colliders - charm $B$-meson factories. find that this can be as large 0.3%, therefore sufficiently significant interpreting measurements when neutral kaons are present final state.
We observe $D^0-\bar{D}^0$ mixing in the decay $D^0\rightarrow K^+\pi^-$ using a data sample of integrated luminosity 976 fb$^{-1}$ collected with Belle detector at KEKB $e^+e^-$ asymmetric-energy collider. measure parameters ${x'}^2 = (0.09\pm0.22)\times 10^{-3}$ and $y' (4.6\pm3.4)\times ratio doubly Cabibbo-suppressed to Cabibbo-favored rates $R_D (3.53\pm0.13)\times 10^{-3}$, where uncertainties are statistical systematic combined. Our measurement excludes no-mixing hypothesis 5.1...
A bstract We search for CP violation in the decay ${D^{+}}\to K_S^0{K^{+}}$ using a data sample with an integrated luminosity of 977 fb −1 collected Belle detector at KEKB e + − asymmetric-energy collider. No has been observed and asymmetry is measured to be (−0.25 ± 0.28 0.14)%, which most sensitive measurement date. After subtracting due ${K^0}-{{\overline{K}}^0}$ mixing, {{\overline{K}}^0}{K^{+}}$ found (+0.08 0.14)%.
We report a measurement of the time-integrated $CP$ asymmetry in neutral charm meson decay $D^0 \to K^0_S K^0_S$ using 921~fb$^{-1}$ data collected at $Υ(4S)$ and $Υ(5S)$ resonances with Belle detector KEKB asymmetric-energy $e^+e^-$ collider. The observed is $$ A_{CP}(D^0 K^0_S) = (-0.02 \pm 1.53 0.17) \%, where first uncertainty statistical second systematic. This latter dominated by error normalisation channel. result consistent Standard Model expectations improves respect to previous...
We review the electro-magnetic energy at axion haloscopes and find that electric corresponding magnetic stored in cavity modes or, equivalently, mode dependent form factors are same regardless of position inside solenoid. Furthermore, we extend our argument to cases satisfying $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\nabla}}\ifmmode\times\else\texttimes\fi{}{\stackrel{\ensuremath{\rightarrow}}{B}}_{\text{external}}=0$, where...
Abstract Understanding telescope pointing (i.e. line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon a candidate source calibration. Although visible size (30′) larger than that planets, we can frequently observe once month with high signal-to-noise ratio. We developed method performing calibration using observational data from Moon. considered tilts axes as well encoder collimation offsets In addition, evaluated effects...
Muons have been accelerated by using a radio-frequency accelerator for the first time. Negative muonium atoms (${\mathrm{Mu}}^{\ensuremath{-}}$), which are bound states of positive muons (${\ensuremath{\mu}}^{+}$) and two electrons, generated from ${\ensuremath{\mu}}^{+}$'s through electron capture process in an aluminum degrader. The ${\mathrm{Mu}}^{\ensuremath{-}}$'s initially electrostatically injected into quadrupole linac (RFQ). In RFQ, to 89 keV. identified momentum measurement time...
We report the first observation of doubly Cabibbo-suppressed decays $D^+ \rightarrow K^+ \eta^{(\prime)}$ using a 791 fb$^{-1}$ data sample collected with Belle detector at KEKB asymmetric-energy $e^+e^-$ collider. The ratio branching fractions relative to singly \pi^+ are $\mathcal{B}(D^+ \eta)/\mathcal{B}(D^+ \eta)$ = (3.06 $\pm$ 0.43 0.14)% and \eta')/\mathcal{B}(D^+ \eta')$ (3.77 0.39 0.10)%. From these, we find that final-state phase difference between tree annihilation amplitudes in...
Using a sample of 102 million $\Upsilon(1S)$ events collected with the Belle detector, we report on first search for charge-parity-even charmonium and charmonium-like states in radiative decays. No significant $\chi_{cJ}$ or $\eta_c$ signal is observed 90% C.L. limits $\BR(\Upsilon(1S)\to \gamma \chi_{c0})<6.5 \times 10^{-4}$, \chi_{c1})<2.3\times 10^{-5}$, \chi_{c2})<7.6 10^{-6}$, \eta_c)<5.7\times 10^{-5}$ are obtained. The product branching fraction X(3872))...