A5010355151- 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
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Power System Optimization and Stability
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Power Systems Fault Detection
- Atomic and Subatomic Physics Research
- Scientific Computing and Data Management
- Gamma-ray bursts and supernovae
- Physics of Superconductivity and Magnetism
- Numerical Methods and Algorithms
- Power Systems and Renewable Energy
- Power Systems and Technologies
- HVDC Systems and Fault Protection
- Advanced Algebra and Geometry
- Algebraic Geometry and Number Theory
Wayne State University
2020-2023
Korea Institute of Science & Technology Information
2023
Campbell Collaboration
2022
University of Bonn
2022
Chonnam National University
2022
University of the Basque Country
2022
Duke University
2022
JSS Science and Technology University
2017
We present a measurement of ${R}_{{K}^{*}}$, the branching fraction ratio $\mathcal{B}(B\ensuremath{\rightarrow}{K}^{*}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}})/\mathcal{B}(B\ensuremath{\rightarrow}{K}^{*}{e}^{+}{e}^{\ensuremath{-}})$, for both charged and neutral $B$ mesons. The case ${R}_{{K}^{*+}}$ is first ever performed. In addition, we report absolute fractions individual modes in bins squared dilepton invariant mass ${q}^{2}$. analysis based on data sample $711\text{...
We measure the ratio of branching fractions for $Υ(4S)$ decays to $B^+B^-$ and $B^0\bar{B}{}^0$ using $B^+ \rightarrow J/ψ(\ell\ell) K^+$ $B^0 K^0$ samples, where $J/ψ(\ell\ell)$ stands $J/ψ\to \ell^+\ell^-$ ($\ell = e$ or $μ$), with $711$ fb$^{-1}$ data collected at resonance Belle detector. find decay rate $Υ(4S) B^+B^-$ over B^0\bar{B}{}^0$ be $1.065\pm0.012\pm 0.019 \pm 0.047$, which is most precise measurement date. The first second uncertainties are statistical systematic,...
Abstract We report on new flavor tagging algorithms developed to determine the quark-flavor content of bottom ( "Image missing"<!-- image only, no MathML or LaTex -->) mesons at Belle II. The provide essential inputs for measurements mixing and charge-parity violation. validate evaluate performance using hadronic --> decays with flavor-specific final states reconstructed in a data set corresponding an integrated luminosity 62.8 fb $$^{-1}$$ <mml:math...
We present the study of B[over ¯]^{0}→Σ_{c}(2455)^{0,++}π^{±}p[over ¯] decays based on 772×10^{6} BB[over events collected with Belle detector at KEKB asymmetric-energy e^{+}e^{-} collider. The Σ_{c}(2455)^{0,++} candidates are reconstructed via their decay to Λ_{c}^{+}π^{∓} and Λ_{c}^{+} pK^{-}π^{+}, pK_{S}^{0}, Λπ^{+} final states. corresponding branching fractions measured be B(B[over ¯]^{0}→Σ_{c}(2455)^{0}π^{+}p[over ¯])=(1.09±0.06±0.07)×10^{-4} ¯]^{0}→Σ_{c}(2455)^{++}π^{-}p[over...
Using data samples of 89.5 and $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ recorded at energies $\sqrt{s}=10.52$ 10.58 GeV, respectively, with the Belle detector KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider, we report measurements branching fractions semileptonic decays ${\mathrm{\ensuremath{\Xi}}}_{c}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}^{\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ ($\ensuremath{\ell}=e$ or $\ensuremath{\mu}$)...
This paper presents a search for the rare flavor-changing neutral current process ${B}^{0}\ensuremath{\rightarrow}{K}^{*0}{\ensuremath{\tau}}^{+}{\ensuremath{\tau}}^{\ensuremath{-}}$ using data taken with Belle detector at KEKB asymmetric energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. The analysis is based on entire $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance sample of $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, corresponding to...
We report results from a study of the spin and parity ${\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}$ using $980\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected by Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. The decay angle distributions in chain...
We present the first observation of ${\mathrm{\ensuremath{\Omega}}}_{c}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}{\ensuremath{\nu}}_{\ensuremath{\mu}}$ decay and measurements branching fraction ratios ${\mathrm{\ensuremath{\Omega}}}_{c}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ decays compared to reference mode...
Using 980 fb−1 of data at and around the ϒ(nS) (n=1, 2, 3, 4, 5) resonances collected with Belle detector KEKB asymmetric-energy e+e− collider, two-photon process γγ→γψ(2S) is studied from threshold to 4.2 GeV for first time. Two structures are seen in invariant mass distribution γψ(2S): one MR1=3922.4±6.5±2.0 MeV/c2 a width ΓR1=22±17±4 MeV, another MR2=4014.3±4.0±1.5 ΓR2=4±11±6 MeV; signals parametrized incoherent sum two Breit-Wigner functions. The structure consistent X(3915) or...
We present a study of the X(3872) lineshape in decay B→X(3872)K→D0¯D*0K using data sample 772×106 B¯B pairs collected at Υ(4S) resonance with Belle detector KEKB asymmetric-energy e+e− collider. The peak near threshold D0¯D*0 invariant mass spectrum is fitted relativistic Breit-Wigner lineshape. determine and width parameters to be mBW=3873.71+0.56−0.50(stat)±0.13(syst) MeV/c2 ΓBW=5.2+2.2−1.5(stat)±0.4(syst) MeV, respectively. branching fraction found...
We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using full data sample of 772×10^{6} BB[over ¯] pairs recorded by Belle detector at KEKB asymmetric-energy e^{+}e^{-} collider. use events in which one B meson is fully reconstructed hadronic decay mode. find no evidence B^{±}→K^{±}τℓ and set upper limits on their branching fractions 90% confidence level (1-3)×10^{-5} range. The obtained are world's best results.
In the bottomonium sector, hindered magnetic dipole transitions between P-wave states <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msub><a:mrow><a:mi>h</a:mi></a:mrow><a:mrow><a:mi>b</a:mi></a:mrow></a:msub><a:mo stretchy="false">(</a:mo><a:mn>2</a:mn><a:mi>P</a:mi><a:mo stretchy="false">)</a:mo><a:mo stretchy="false">→</a:mo><a:msub><a:mrow><a:mi>χ</a:mi></a:mrow><a:mrow><a:mi>b</a:mi><a:mi>J</a:mi></a:mrow></a:msub><a:mo...
We report measurements of production cross sections for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>ρ</a:mi><a:mo>+</a:mo></a:msup></a:math>, <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mi>ρ</c:mi><c:mn>0</c:mn></c:msup></c:math>, <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi>ω</e:mi></e:math>, <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"...
We report measurements of the branching fractions singly Cabibbo-suppressed decays ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}p\ensuremath{\eta}$ and ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{0}$ using full Belle data sample corresponding to an integrated luminosity $980.6\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The were collected by detector at KEKB ${e}^{+}{e}^{\ensuremath{-}}$ asymmetric energy collider. A clear...
We present the measurement of first to fourth order moments four-momentum transfer squared, ${q}^{2}$, inclusive $B\ensuremath{\rightarrow}{X}_{c}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ decays using full Belle dataset $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity at $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance where $\ensuremath{\ell}=e$, $\ensuremath{\mu}$. The determination these and their systematic uncertainties open new pathways...
We report the first evidence for $X(3872)$ production in two-photon interactions by tagging either electron or positron final state, exploring highly virtual photon region. The search is performed ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, using $825\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected Belle detector operated at KEKB ${e}^{+}{e}^{\ensuremath{-}}$...
We search for a new gauge boson $Z'$ that couples only to heavy leptons and their corresponding neutrinos in the process $e^{+} e^{-} \rightarrow Z'(\rightarrow \mu^{+}\mu^{-}) \mu^{+}\mu^{-}$, using 643 fb$^{-1}$ data sample collected by Belle experiment at or near $\Upsilon(1S,2S,3S,4S,5S)$ resonances KEKB collider. For first time, effects due initial state radiation are used estimating detection efficiency. No signal is observed mass range of 0.212 \ -- 10 GeV/${\it c}^2$ we set an upper...
We report a study of Λ+c→Σ+π0, Λ+c→Σ+η, and Λ+c→Σ+η′ using the data sample corresponding to an integrated luminosity 980 fb−1 collected with Belle detector at KEKB asymmetric-energy e+e− collider. The branching fractions relative Λ+c→Σ+π0 are measured as BΛ+c→Σ+η/BΛ+c→Σ+π0=0.25±0.03±0.01 BΛ+c→Σ+η′/BΛ+c→Σ+π0=0.33±0.06±0.02. Using BΛ+c→Σ+π0=(1.25±0.10)%, we obtain BΛ+c→Σ+η=(3.14±0.35±0.17±0.25)×10−3 BΛ+c→Σ+η′=(4.16±0.75±0.25±0.33)×10−3. Here uncertainties statistical, systematic, from...
We present a study of singly Cabibbo-suppressed decay Λ+c→pK0SK0S and Cabibbo-favored Λ+c→pK0Sη based on 980 fb−1 data collected by the Belle detector, operating at KEKB energy-asymmetric e+e− collider. measure their branching fractions relative to Λ+c→pK0S: B(Λ+c→pK0SK0S)/B(Λ+c→pK0S)=(1.48±0.08±0.04)×10−2 B(Λ+c→pK0Sη)/B(Λ+c→pK0S)=(2.73±0.06±0.13)×10−1. Combining with world average B(Λ+c→pK0S), we have absolute fractions, B(Λ+c→pK0SK0S)=(2.35±0.12±0.07±0.12)×10−4...
Using the data sample of 980 fb−1 collected with Belle detector operating at KEKB asymmetric-energy e+e− collider, we present results an investigation Λπ+ and Λπ− invariant mass distributions looking for substructure in decay Λ+c→Λπ+π+π−. We find a significant signal each distribution. When interpreted as resonances, (Λπ−) combination 1434.3±0.6(stat)±0.9(syst) MeV/c2 [1438.5±0.9(stat)±2.5(syst) MeV/c2], intrinsic width 11.5±2.8(stat)±5.3(syst) [33.0±7.5(stat)±23.6(syst) MeV/c2] significance...
The processes e+e−→Σ0¯Σ0 and e+e−→Σ+¯Σ− are studied using initial-state-radiation events in a sample of 980 fb−1 collected with the Belle detector at KEKB asymmetric-energy e+e− collider. cross sections from mass threshold to 3 GeV/c2 effective form factors Σ0 Σ+ measured. In charmonium region, we observe decays J/ψ→Σ0¯Σ0 J/ψ→Σ+¯Σ− determine respective branching fractions.8 MoreReceived 31 October 2022Accepted 28 March 2023DOI:https://doi.org/10.1103/PhysRevD.107.072008Published by American...
We search for the baryon and lepton number violating charm decays, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>D</a:mi><a:mo stretchy="false">→</a:mo><a:mi>p</a:mi><a:mo>ℓ</a:mo></a:mrow></a:math>, where <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mi>D</d:mi></d:math> is either a <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:msup><f:mi>D</f:mi><f:mn>0</f:mn></f:msup></f:math> or <h:math...
We report branching fraction measurements of four decay modes the $\Lambda_{c}^{+}$ baryon, each which includes an $\eta$ meson and a $\Lambda$ baryon in final state, all are measured relative to $\Lambda_{c}^{+} \rightarrow p K^{-} pi^{+}$ mode. The results based on $980~\mathrm{fb^{-1}}$ data sample collected by Belle detector at KEKB asymmetric-energy $e^{+}e^{-}$ collider. Two decays, $\eta \Sigma^{0} \pi^{+}$ $\Lambda(1670) \pi^{+}$, observed for first time, while other modes,...
A bstract Using a data sample of 980 fb − 1 collected with the Belle detector at KEKB asymmetric-energy e + collider, we study for first time singly Cabibbo-suppressed decays $$ {\Omega}_c^0\to {\Xi}^{-}{\pi}^{+} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Ω</mml:mi> <mml:mi>c</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:math> and Ω K...