A5105651500- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Statistical Methods and Bayesian Inference
- Muon and positron interactions and applications
- Scientific Computing and Data Management
- Rangeland Management and Livestock Ecology
- Machine Learning in Bioinformatics
- Electric Vehicles and Infrastructure
- Theoretical and Computational Physics
- Conservation, Biodiversity, and Resource Management
- Medical Imaging Techniques and Applications
- Hemoglobin structure and function
- Stochastic processes and statistical mechanics
- Pediatric Urology and Nephrology Studies
- Electric and Hybrid Vehicle Technologies
- Digital Transformation in Industry
China Institute of Atomic Energy
2023-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2023-2024
Weichai Power (China)
2024
Institut de Physique
2022-2024
A. Alikhanyan National Laboratory
2023-2024
Institute of Modern Physics
2021-2022
Fudan University
2021-2022
Beihang University
2017-2021
Chonnam National University
2018
University of the Basque Country
2018
We present measurements of the branching fractions for decays $B\to K \mu^{+}\mu^{-}$ and e^{+}e^{-}$, their ratio ($R_{K}$), using a data sample 711 $fb^{-1}$ that contains $772 \times 10^{6}$ $B\bar{B}$ events. The were collected at $\Upsilon(4S)$ resonance with Belle detector KEKB asymmetric-energy $e^{+}e^{-}$ collider. $R_{K}$ is measured in five bins dilepton invariant-mass-squared ($q^{2}$): $q^{2} \in (0.1, 4.0), (4.0, 8.12), (1.0, 6.0)$, $(10.2, 12.8)$ ($>14.18) GeV^{2}/c^{4}$,...
We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{cb}|$ from ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ decays, reconstructed with full Belle data set $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity. Two form factor parametrizations, originally conceived by Caprini-Lellouch-Neubert (CLN) and Boyd, Grinstein Lebed (BGL) groups, are used to extract product...
Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω^{*-} candidate decaying into Ξ^{0}K^{-} and Ξ^{-}K_{S}^{0} mass of 2012.4±0.7(stat)±0.6(syst) MeV/c^{2} width Γ=6.4_{-2.0}^{+2.5}(stat)±1.6(syst) MeV. The is seen primarily in ϒ(1S),ϒ(2S), ϒ(3S) decays.
We present the first measurements of absolute branching fractions ${\mathrm{\ensuremath{\Xi}}}_{c}^{0}$ decays into ${\mathrm{\ensuremath{\Xi}}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, $\mathrm{\ensuremath{\Lambda}}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, and $p{K}^{\ensuremath{-}}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ final states. The are made using a dataset comprising $(772\ifmmode\pm\else\textpm\fi{}11)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected...
Using data samples of $e^+e^-$ collisions collected at the $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ resonances with Belle detector, we search for three-body decay $\Omega(2012)$ baryon to $K\pi\Xi$. This is predicted dominate models describing as a $K\Xi(1530)$ molecule. No significant signals are observed in studied channels, 90\% credibility level upper limits on ratios branching fractions relative $K \Xi$ modes obtained.
We present the first measurements of absolute branching fractions $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$ and $p K^- final states. Our analysis is based on a data set $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at $\Upsilon(4S)$ resonance with Belle detector KEKB $e^+e^-$ collider. measure fraction $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ recoiling against $\bar{\Lambda}_c^-$ in $\bar{B}^0$ resulting ${\cal B}(\bar{B}^{0} \Xi_{c}^{+}) = [1.16 \pm 0.42(\rm stat.)...
We report measurements of the production cross sections charged pions, kaons, and protons as a function fractional energy, event-shape variable called thrust, transverse momentum with respect to thrust axis. These access momenta created in fragmentation process, which are critical importance understanding any transverse-momentum-dependent distribution functions. The low transverse-momentum part can be well described by Gaussians is generally assumed but fractional-energy dependence...
The inclusive cross sections for dihadrons of charged pions and kaons (${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}hhX$) in electron-positron annihilation are reported. They obtained as a function the total fractional energy invariant mass any di-hadron combination same hemisphere defined by thrust event-shape variable its axis. Since same-hemisphere can be assumed to originate predominantly from initial parton, fragmentation functions probed. These needed an unpolarized baseline...
We report measurements of isospin asymmetry ${\mathrm{\ensuremath{\Delta}}}_{0\ensuremath{-}}$ and difference direct $CP$ asymmetries $\mathrm{\ensuremath{\Delta}}{A}_{CP}$ between charged neutral $B\ensuremath{\rightarrow}{X}_{s}\ensuremath{\gamma}$ decays. This analysis is based on the data sample containing $772\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs that was collected with Belle detector at KEKB energy-asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. Using a...
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...
Using a data sample of 980~fb$^{-1}$ collected with the Belle detector operating at KEKB asymmetric-energy $e^+e^-$ collider, we present evidence for $\Omega(2012)^-$ in resonant substructure $\Omega_{c}^{0} \to \pi^+ (\bar{K}\Xi)^{-}$ ($(\bar{K}\Xi)^{-}$ = $K^-\Xi^0$ + $\bar{K}^0 \Xi^-$) decays. The significance signal is 4.2$\sigma$ after considering systematic uncertainties. ratio branching fraction \pi^{+} \Omega(2012)^- relative to that \Omega^-$ calculated be 0.220 $\pm$ 0.059(stat.)...
We present a measurement of the Michel parameters $τ$ lepton, $\barη$ and $ξκ$, in radiative leptonic decay $τ^- \rightarrow \ell^- ν_τ \barν_{\ell} γ$ using 711~f$\mathrm{b}^{-1}$ collision data collected with Belle detector at KEKB $e^+e^-$ collider. The are measured an unbinned maximum likelihood fit to kinematic distribution $e^+e^-\rightarrowτ^+τ^-\rightarrow (π^+π^0 \barν_τ)(\ell^-ν_τ\barν_{\ell}γ)$ $(\ell=e$ or $μ)$. values $\barη = -1.3 \pm 1.5 0.8$ $ξκ= 0.5 0.4 0.2$, where first...
We present a measurement of the branching fractions Cabibbo favored ${\overline{B}}^{0}\ensuremath{\rightarrow}{D}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and suppressed ${\overline{B}}^{0}\ensuremath{\rightarrow}{D}^{+}{K}^{\ensuremath{-}}$ decays. find...
We report new measurements of the production cross sections pairs charged pions and kaons as a function their fractional energies using various fractional-energy definitions. Two different definitions were used compared to conventional definition reported previously. The variables aim at either identifying dihadron in terms single-hadron fragmentation functions, or provide means characterizing transverse momentum created process. results obtained applying updated initial-state radiation...
We have searched for the lepton-flavor-violating decay $B^{0}\to K^{\ast 0} \mu^{\pm} e^{\mp}$ using a data sample of 711 $fb^{-1}$ that contains $772 \times 10^{6}$ $B\bar{B}$ pairs. The were collected near $\Upsilon (4S)$ resonance with Belle detector at KEKB asymmetric-energy $e^{+}e^{-}$ collider. No signals observed, and we set 90% confidence level upper limits on branching fractions ${\cal B}(B^{0}\to \mu^{+} e^{-})< 1.2\times 10^{-7}$, \mu^{-} e^{+})< 1.6\times and, both decays...
We report measurements of the branching fractions decays ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Sigma}}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Sigma}}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$ and...
We report searches for the processes $e^+e^-\to\pi^+\pi^-\pi^0\chi_{bJ}$ and $e^+e^-\to\phi\chi_{bJ}$ (J=1,2) based on data samples collected by Belle experiment at KEKB collider. first observation of process $e^+e^-\to (\pi^+\pi^-\pi^0)_{\rm non-\omega}\chi_{b1}$ evidence $e^+e^-\to\omega\chi_{bJ}$ in vicinity $\Upsilon(11020)$ resonance, with center-of-mass energies from 10.96 to 11.05~GeV. The significances $(\pi^+\pi^-\pi^0)_{\rm $\omega\chi_{bJ}$ are greater than $5.3\sigma$...
We search for $CP$ violation in the singly-Cabibbo-suppressed decay $D^{0}\rightarrow K^{+}K^{-}\pi^{+}\pi^{-}$ using data corresponding to an integrated luminosity of $988\text{ }{\rm fb}^{-1}$ collected by Belle detector at KEKB $e^{+}e^{-}$ collider. measure a set five kinematically dependent asymmetries, which four asymmetries are measured first time. The asymmetry measurements can be sensitive via interference between different partial-wave contributions and performed on other...
We measure the time-dependent $CP$ violation parameters in ${B}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}_{S}^{0}{K}_{S}^{0}$ decays using $772\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs collected at $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance with Belle detector KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. The obtained mixing-induced and direct asymmetries are $\ensuremath{-}0.71\ifmmode\pm\else\textpm\fi{}0.23\text{...
Using a data sample of 980 fb$^{-1}$ collected with the Belle detector at KEKB asymmetric-energy $e^+e^-$ collider, we study processes $\Xi^0_c\to \Lambda\bar K^{*0}$, \Sigma^0\bar and \Sigma^+K^{*-}$ for first time. The relative branching ratios to normalization mode $\Xi^0_c\to\Xi^-\pi^+$ are measured be $${\cal B}(\Xi^0_c\to K^{*0})/{\cal B}(\xic\to \Xi^-\pi^+)=0.18\pm0.02({\rm stat.})\pm0.01({\rm syst.}),$$ \Xi^-\pi^+)=0.69\pm0.03({\rm stat.})\pm0.03({\rm \Sigma^+K^{*-})/{\cal...
The measurement of two-particle angular correlation functions in high-multiplicity e^{+}e^{-} collisions at sqrt[s]=10.52 GeV is reported. In this study, the 89.5 fb^{-1} hadronic annihilation data collected by Belle detector KEKB are used. Two-particle measured full relative azimuthal angle (Δϕ) and three units pseudorapidity (Δη), defined either electron beam axis or event-shape thrust axis, studied as a function charged-particle multiplicity. analysis, with mostly outgoing quark pairs...
We present the first measurements of branching fractions rare tau-lepton decays, ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ ($\ensuremath{\ell}=e$ or $\ensuremath{\mu}$), using a data sample corresponding to $562\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected at center-of-mass energy 10.58 GeV with Belle detector KEKB...
We report the observation of $\mathrm{\ensuremath{\Upsilon}}(2S)\ensuremath{\rightarrow}\ensuremath{\gamma}{\ensuremath{\eta}}_{b}(1S)$ decay based on an analysis inclusive photon spectrum $24.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ ${e}^{+}{e}^{\ensuremath{-}}$ collisions at $\mathrm{\ensuremath{\Upsilon}}(2S)$ center-of-mass energy collected with Belle detector KEKB asymmetric-energy collider. measure a branching fraction...
The first dedicated search for the ηc2(1D) is carried out using decays B+ → ηc2(1D)K+, B0 $$ {K}_S^0 , ηc2(1D)π−K+, and ηc2(1D)π+ with hcγ. No significant signal found. For mass range between 3795 3845 MeV/c2, branching-fraction upper limits are determined to be ℬ(B+ ηc2(1D)K+) × ℬ(ηc2(1D) hcγ) < 3.7 10−5, ℬ(B0 ηc2(1D)K0) 3.5 ηc2(1D)π−K+) 1.0 10−4, ) 1.1 10−4 at 90% C.L. analysis based on 711 fb−1 data sample collected ϒ(4S) resonance by Belle detector, which operated KEKB asymmetric-energy...