A5102852019- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Atomic and Molecular Physics
- Thallium and Germanium Studies
- Computational Physics and Python Applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Scientific Research and Discoveries
- CO2 Reduction Techniques and Catalysts
- Traffic control and management
- Chemistry and Chemical Engineering
- Human-Automation Interaction and Safety
- Advanced NMR Techniques and Applications
- Autonomous Vehicle Technology and Safety
- Neutrino Physics Research
Institute of High Energy Physics
2015-2024
Robert Bosch (Germany)
2020-2024
Temper (United States)
2024
Hunan University
2023
Chinese Academy of Sciences
2015-2022
Weatherford College
2020
Institute of Modern Physics
2005-2016
China Center of Advanced Science and Technology
2015
COMSATS University Islamabad
2015
Beijing Institute of Petrochemical Technology
2015
Using an e^{+}e^{-} collision data sample of 2.93 fb^{-1} collected at a center-of-mass energy 3.773 GeV by the BESIII detector BEPCII, we report observation D^{0}→a_{0}(980)^{-}e^{+}ν_{e} and evidence for D^{+}→a_{0}(980)^{0}e^{+}ν_{e} with significances 6.4σ 2.9σ, respectively. The absolute branching fractions are determined to be B(D^{0}→a_{0}(980)^{-}e^{+}ν_{e})×B(a_{0}(980)^{-}→ηπ^{-})=[1.33_{-0.29}^{+0.33}(stat)±0.09(syst)]×10^{-4}...
We report on new measurements of Cabibbo-suppressed semileptonic D_{s}^{+} decays using 3.19 fb^{-1} e^{+}e^{-} annihilation data sample collected at a center-of-mass energy 4.178 GeV with the BESIII detector BEPCII collider. Our results include branching fractions B(D_{s}^{+}→K^{0}e^{+}ν_{e})=[3.25±0.38(stat)±0.16(syst)]×10^{-3} and B(D_{s}^{+}→K^{*0}e^{+}ν_{e})=[2.37±0.26(stat)±0.20(syst)]×10^{-3}, which are much improved relative to previous measurements, first hadronic form-factor...
Using e^{+}e^{-} annihilation data corresponding to an integrated luminosity of 3.19 fb^{-1} collected at a center-of-mass energy 4.178 GeV with the BESIII detector, we measure absolute branching fractions B_{D_{s}^{+}→ηe^{+}ν_{e}}=(2.323±0.063_{stat}±0.063_{syst})% and B_{D_{s}^{+}→η^{'}e^{+}ν_{e}}=(0.824±0.073_{stat}±0.027_{syst})% via tagged analysis technique, where one D_{s} is fully reconstructed in hadronic mode. Combining these measurements previous B_{D^{+}→η^{(')}e^{+}ν_{e}},...
We report new measurements of the cross sections for production D Dbar final states at psi(3770) resonance. Our data sample consists an integrated luminosity 2.93/fb e+e- annihilation produced by BEPCII collider and collected analyzed with BESIII detector. exclusively reconstruct three D0 six D+ hadronic decay modes use ratio yield fully reconstructed events ("double tags") to all or mesons ("single determine number D0bar D+D- events, benefiting from cancellation many systematic...
By analyzing a 2.93 fb^{-1} data sample of e^{+}e^{-} collisions, recorded at center-of-mass energy 3.773 GeV with the BESIII detector operated BEPCII collider, we report first observation semileptonic D^{+} transition into axial-vector meson D^{+}→K[over ¯]_{1}(1270)^{0}e^{+}ν_{e} statistical significance greater than 10σ. Its decay branching fraction is determined to be B[D^{+}→K[over ¯]_{1}(1270)^{0}e^{+}ν_{e}]=(2.30±0.26_{-0.21}^{+0.18}±0.25)×10^{-3}, where and second uncertainties are...
This letter is the second report from a series of IEEE TIV's Decentralized and Hybrid Workshops (DHWs) on Intelligent Vehicles for Education (IV4E). It outlines prospect The Autonomous One (TAO), future autonomous racing competition modeled after Formula to advance IV4E by pushing boundaries artificial intelligence. Existing races face challenges, including compromised fairness low participant enthusiasm. These issues limit spectator engagement, thereby reducing races' educational value. To...
We search for rare decays of D mesons to hadrons accompanied by an electron-positron pair (h(h('))e+e−), using e+e− collision sample corresponding integrated luminosity 2.93 fb−1 collected with the BESIII detector at √s=3.773 GeV. No significant signals are observed, and upper limits on branching fractions 90% confidence level determined. The sensitivities results 10−5–10−6, providing a large improvement over previous searches.Received 27 February...
Abstract We study the hadronic decays of to final states and , using an annihilation data sample 567 pb -1 taken at a center-of-mass energy 4.6 GeV with BESIII detector BEPCII collider. find evidence for statistical significance respectively. Normalizing reference we obtain ratios branching fractions be The upper limits 90% confidence level are set . Using measurements decays, determine % (<0.68%) (<1.9%). Here, first uncertainties second systematic. obtained fraction is consistent...
A search for the rare radiative leptonic decay $D_s^+\to\gamma e^+\nu_e$ is performed first time using electron-positron collision data corresponding to an integrated luminosity of 3.19 fb$^{-1}$, collected with BESIII detector at a center-of-mass energy 4.178 GeV. No evidence seen and upper limit $\mathcal B(D_s^+\to\gamma e^+\nu_e)<1.3\times 10^{-4}$ set on partial branching fraction 90\% confidence level photon energies $E_{\gamma}^*>0.01$~GeV.
We study the reaction e+e−→π+π−π0ηc for first time using data samples collected with BESIII detector at center-of-mass energies s=4.226, 4.258, 4.358, 4.416, and 4.600 GeV. Evidence of this process is found Born cross section σB(e+e−→π+π−π0ηc), excluding e+e−→ωηc ηηc, measured to be (46−11+12±10) pb s=4.226 decay Zc(3900)±→ρ±ηc reported GeV a significance 3.9σ, including systematic uncertainties, times branching fraction σB(e+e−→π∓Zc(3900)±)×B(Zc(3900)±→ρ±ηc) (48±11±11) pb, which indicates...
Using $2.93\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation data collected at a center-of-mass energy $\sqrt{s}=3.773\text{ }\mathrm{GeV}$ with the BESIII detector operating BEPCII collider, we search for semileptonic ${D}^{0(+)}$ decays into ${b}_{1}(1235{)}^{\ensuremath{-}(0)}$ axial-vector meson first time. No significant signal is observed either charge combination. The upper limits on product branching fractions are...
Using a data sample of (1310.6±7.0)×106 J/ψ events collected with the BESIII detector operating at BEPCII collider, we perform first experimental search for invisible decays light vector meson (V=ω, ϕ) via J/ψ→Vη decays. The decay η→π+π−π0 is utilized to tag V decaying into final state. No evidence significant signal observed, and upper limits on ratio branching fractions 90% confidence level are determined be B(ω→invisible)B(ω→π+π−π0)<8.1×10−5 B(ϕ→invisible)B(ϕ→K+K−)<3.4×10−4. By using...
The decay $Z_c(3900)^\pm\to\omega\pi^\pm$ is searched for using data samples collected with the BESIII detector operating at BEPCII storage ring center-of-mass energies $\sqrt{s}=4.23$ and $4.26$~GeV. No significant signal $Z_c(3900)^\pm$ found, upper limits 90\% confidence level on Born cross section process $e^+e^-\to Z_c(3900)^\pm\pi^\mp\to\omega\pi^+\pi^-$ are determined to be $0.26$ $0.18$ pb 4.26 GeV, respectively.
We observe the process $\ensuremath{\psi}(3686)\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\eta}}^{\ensuremath{'}}$ for first time, with a statistical significance higher than $10\ensuremath{\sigma}$, and measure branching fraction of $J/\ensuremath{\psi}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\eta}}^{\ensuremath{'}}$ an improved accuracy compared to earlier studies. The measurements are based on $4.48\ifmmode\times\else\texttimes\fi{}{10}^{8}\text{ }\text{...
We search for J/ψ radiative decays into a weakly interacting neutral particle, namely an invisible using the produced through process ψ(3686)→π+π−J/ψ in data sample of (448.1±2.9)×106 ψ(3686) collected by BESIII detector at BEPCII. No significant signal is observed. Using modified frequentist method, upper limits on branching fractions are set under different assumptions particle masses up to 1.2 GeV/c2. The limit corresponding with zero mass 7.0×10−7 90% confidence level.Received 13 March...
The rare decay η′→π+π−e+e− is studied using a sample of 1.3×109 J/ψ events collected with the BESIII detector at BEPCII in 2009 and 2012. branching fraction measured improved precision to be (2.42±0.05stat±0.08syst)×10−3. Due inclusion new data, this result supersedes last on fraction. In addition, CP-violating asymmetry angle between planes π+π−-pair e+e−-pair investigated. A measurable value would indicate physics beyond standard model; ACP=(2.9±3.7stat±1.1syst)%, which consistent model...
A bstract We measure the branching fractions for seven $$ {D}_s^{+} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> two-body decays to pseudo-scalar mesons, by analyzing data collected at \sqrt{s} <mml:msqrt> </mml:msqrt> = 4 . 178 ∼ 226 GeV with BESIII detector BEPCII collider. The are determined be {\displaystyle \begin{array}{c}\mathcal{B}\left({D}_s^{+}\to {K}^{+}\eta...
Lifetime of the $3/{2}^{\ensuremath{-}}$ first excited state in $^{37}\mathrm{S}$ populated by ${\ensuremath{\beta}}^{\ensuremath{-}}$ decay $^{37}\mathrm{P}$ has been measured using $\ensuremath{\beta}\ensuremath{-}\ensuremath{\gamma}$ delayed coincidence technique. The $B(E2;7/{2}^{\ensuremath{-}}\ensuremath{\rightarrow}3/{2}^{\ensuremath{-}})$ value deduced from lifetime comes close to $B(E2;{0}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ weakly deformed $^{38}\mathrm{S}$ but deviates...
Utilizing the dataset corresponding to an integrated luminosity of $2.93$ fb$^{-1}$ at $\sqrt{s}=3.773$ GeV collected by BESIII detector, we report first amplitude analysis and branching fraction measurement $D^0\rightarrow K^-\pi^+\pi^0\pi^0$ decay. We investigate sub-structures determine relative fractions phases among different intermediate processes. Our results are used provide accurate detection efficiency allow ${\cal B}(D^0\rightarrow K^-\pi^+\pi^0\pi^0) \,=\, (8.86 \pm...
…are often invoked as catalytically competent intermediates in oxidative crosscouplings.T his Cover illustrates how two asteroids (CF 3 &Fligands) collide with Venus,traditionally associated to copper, assembling the organocopper(III) fluoride,[ Cu(CF ) F] À (2), which is depicted on surface of planet.In their Communication (e202319412), Julia Contreras-García, Noel Nebra et al. demonstrate key role 2 C-CF bond formation occurring through a2 e redox shuttle.Graphic design by Pablo...
The inclusive cross sections of prompt $J/\psi$ and $\psi(3686)$ production are measured at center-of-mass energies from 3.808 to 4.951 GeV. dataset used is 22 fb$^{-1}$ $e^{+}e^{-}$ annihilation data collected with the BESIII detector operating BEPCII storage ring. results obtained in agreement previous measurements exclusive production. average values for energy ranges 4.527 GeV 4.843 $\psi(3686)$, where impact known resonances negligible, $14.0\pm1.7\pm3.1$ pb $15.3\pm3.0$ pb,...
High-spin band structures in 184Au have been re-investigated using the multidetector array of GASP following 149Sm(29Si, 4nγ)184Au reaction. Four previously observed bands built on prolate configurations extended significantly up to high spins and two weakly populated are newly identified. Structure properties these briefly discussed.
Catalytic conversion of biomass to fuels and chemicals is fraught with low selectivity.This Minireview provides an overview the physical chemical protec-tion strategies used improve selectivity in describes potential using protection chemistry manipulate catalytic pathways.