A5107859057- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Ferroelectric and Piezoelectric Materials
- Astrophysics and Cosmic Phenomena
- Solid-state spectroscopy and crystallography
- Asian Culture and Media Studies
- Glass properties and applications
- Superconducting Materials and Applications
- 3D Shape Modeling and Analysis
- Cosmology and Gravitation Theories
- Advanced Numerical Analysis Techniques
- Computer Graphics and Visualization Techniques
- Media Studies and Communication
Shanghai Institute for Science of Science
2025
Institute of Science Tokyo
2025
Materials Science & Engineering
2025
Zhengzhou University
2006-2024
Nanjing University of the Arts
2024
Syracuse University
2017
University of Puerto Rico-Mayaguez
2004-2008
University of Pittsburgh
2005
University of Minnesota
2005
We observe signals for the decays ψ(3770)→XJ/ψ from data acquired with CLEO detector operating at CESR e+e− collider √s=3773 MeV. measure following branching fractions B(ψ(3770)→XJ/ψ) and significances: (189±20±20)×10−5 (11.6σ) X=π+π−, (80±25±16)×10−5 (3.4σ) X=π0π0, (87±33±22)×10−5 (3.5σ) X=η, where errors are statistical systematic, respectively. The radiative return process e+e−→γψ(2S) populates same event sample is used to Γee[ψ(2S)]=(2.54±0.03±0.11) keV.Received 9 August...
The resonant substructure in D0 --> K0S pi+ pi- decays is described by a combination of ten quasi two-body intermediate states which include both CP-even and CP-odd eigenstates one doubly-Cabibbo suppressed channel. We present formalism that connects the variation decay time over Dalitz plot with mixing parameters, x y, describe off-shell on-shell D0-D0B mixing. analyze CLEO II.V data sample find parameters y are consistent zero. limit (-4.7 < 8.6)% (-6.1 3.5)% at 95\% confidence level
We have studied the inclusive photon spectrum in psi(2S) decays using CLEO III detector. present most precise measurements of electric dipole (E1) transition rates for psi(2S)--> gamma chicJ(1P) (J=0,1,2). also confirm hindered magnetic (M1) transition, psi(2S)-->gamma etac(1S). However, direct M1 etac(2S) observed by Crystal Ball as a narrow peak at energy 91 MeV is not found our data.
We describe new measurements of the inclusive and exclusive branching fractions for Psi(2S) transitions to J/Psi using e+e- collision data collected with CLEO detector operating at CESR. All ratios reported here represent either most precise date or first direct measurements. Indirectly in combination other measurements, we determine B(ChicJ --> gamma J/Psi) B(Psi(2S) light hadrons).
Using $3.08\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\psi}(2S)$ decays observed in ${e}^{+}{e}^{\ensuremath{-}}$ collisions by the CLEO detector, we present results of a study decaying into baryon-antibaryon final states. We report most precise measurements following eight modes: $p\overline{p}$, $\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}$, ${\ensuremath{\Sigma}}^{+}\overline{{\ensuremath{\Sigma}}^{+}}$ (first observation),...
In e+e− collisions recorded using the CLEO II.V detector we have studied Cabibbo suppressed decay of D0→π+π−π0 with initial flavor D0 tagged by D*+→D0π+. We use Dalitz-plot analysis technique to measure resonant substructure in this final state and observe ρπ nonresonant contributions fitting for their amplitudes relative phases. describe ππ S wave a K-matrix formalism limit contribution rate be <2.5%@95% confidence level, contrast large observed D+→π+π−π+ decay. Using phases from analysis,...
Using data taken with the CLEO III detector at Cornell Electron Storage Ring, we have investigated direct photon spectrum in decays Upsilon(1S) -> gggamma, Upsilon(2S) Upsilon}(3S) gggamma. The latter two of these are first measurements. Our analysis procedures differ from previous ones following ways: a) background estimates (primarily pi^0 based on isospin symmetry rather than a determination spectrum, which permits measurement and Upsilon(3S) spectra without explicit corrections for...
We present a measurement of the branching fraction invisible Υ(1S) decays, using 1.2 fb−1 data collected at Υ(2S) resonance with CLEO III detector CESR. After subtracting expected backgrounds from events that pass selection criteria for decay in Υ(2S)→π+π−Υ(1S), we deduce 90% C.L. upper limit B[Υ(1S)→invisible]<0.39%.Received 21 December 2006DOI:https://doi.org/10.1103/PhysRevD.75.031104©2007 American Physical Society
Using data collected with the CLEO III detector at CESR e+e- collider, we report on a first observation of decay Upsilon(3S)-->tau+tau-, and precisely measure ratio branching fractions Upsilon(nS), n=1, 2, 3, to tau+tau- mu+mu- final states, finding agreement expectations from lepton universality. We derive absolute for these decays, also set limit influence low mass CP-odd Higgs boson in Upsilon(1S).
Using the current world's largest data sample of ψ(3770) decays, we present results a search for non-D¯¯¯D decay ψ(3770)→K0SK0L. We find no signal, and obtain an upper limit σ(e+e−→ψ(3770)→K0SK0L)<0.07 pb at 90% confidence level (CL). Our result tests theoretical prediction bound on B(ψ(3770)→K0SK0L) based charmonia-mixing model.Received 10 March 2006Corrected 6 June 2007DOI:https://doi.org/10.1103/PhysRevD.74.012005©2006 American Physical Society
The rare $\ensuremath{\tau}$ lepton decays to four explicitly identified hadrons have been studied with the CLEO detector at Cornell Electron Storage Ring using $(7.56\ifmmode\pm\else\textpm\fi{}0.15)\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected near $\sqrt{s}=10.58\text{ }\mathrm{GeV}$. first statistically significant measurements...
We report on a search for the recently reported X(3872) state using 15.1 fb(-1) of e(+)e(-) data taken in sqrt[s] = 9.46-11.30 GeV region. Separate searches production untagged gammagamma fusion and annihilation following initial radiation are made by taking advantage unique angular correlation between leptons from decay J/psi --> l(+)l(-) to pi(+)pi(-)J/psi. No signals observed either case, 90% confidence upper limits established as (2J+1)Gamma(gammagamma)(X(3872))B(X pi(+)pi(-)J/psi) <...
We present the first experimental limits on high-q^2 contributions to charmless semileptonic B decays of form expected from Weak Annihilation (WA) decay mechanism. Such could bias determinations |Vub| inclusive measurements B-> X_u lnu. Using a wide range models based available theoretical input we set limit (Gamma_WA/Gamma_b->u) < 7.4% (90% confidence level) WA fraction, and assess impact previous |Vub|.
In e + -collisions recorded using the CLEO II.V detector we have studied Cabibbo suppressed decay of D 0 → π -π with initial flavor tagged by * .We use Dalitz-plot analysis technique to measure resonant substructure in this final state and observe ρπ non-resonant contributions fitting for their amplitudes relative phases.We describe ππ S-wave a K-matrix formalism limit contribution rate be < 2.5% @ 95% confidence level, contrast large observed decay.Using phases from analysis, calculate an...
We analyze $13.8\text{ }\text{ }\mathrm{f}{\mathrm{b}}^{\ensuremath{-}1}$ of the integrated ${e}^{+}{e}^{\ensuremath{-}}$ luminosity collected at 10.6 GeV center-of-mass energy with CLEO II and II.V detectors to study exclusive two-photon production hadrons masses below $1.7\text{ }\mathrm{GeV}/{\mathrm{c}}^{2}$ decaying into ${K}_{S}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$ final state. observe two statistically significant enhancements in...
We present model independent measurements of the helicity basis form factors in decay D+ -> K- pi+ e+ nu_e obtained from about 2800 decays reconstructed a 281 pb^{-1} data sample collected at psi(3770) center-of-mass energy with CLEO-c detector. confirm existence previously observed spin-zero component interfering K*0bar amplitude. see no evidence for additional d- or f-wave contributions.
By using $1.8\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $D\overline{D}$ pairs, we have measured $\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{e}^{+}{\ensuremath{\nu}}_{e})=0.299(11)(9)%$, $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{e}^{+}{\ensuremath{\nu}}_{e})=0.373(22)(13)%$, $\mathcal{B}({D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{e}^{+}{\ensuremath{\nu}}_{e})=3.56(3)(9)%$, and...
We have searched a sample of 9.6 x 10(6) BB events for the lepton-flavor-violating leptonic B decays, B(0)-->mu(+/-)tau(-/+) and B(0)-->e(+/-)tau(-/+). The tau lepton was detected through decay modes tau-->lnunu(-) , where l=e, mu. There is no indication signal, we obtain 90% confidence level upper limits B(B(0)-->mu(+/-)tau(-/+))<3.8 10(-5) B(B(0)-->e(+/-)tau(-/+))<1.3 10(-4).
With the rapid development of information technology and diversification social demands, news media industry faces profound changes necessity for innovation. Based on significance innovation in new era, this study addresses current challenges media, such as insufficient technological advancement, severe platform data barriers, a shortage talent. The paper proposes strategies strengthening R&D investment, promoting cross-platform cooperation sharing, cultivating recruiting talents,...
Motivated by concerns regarding possible two-body contributions to the recently-measured inclusive Upsilon(nS)->gamma+X (n=1, 2, 3) direct photon spectra, we report on a new study of exclusive radiative decays these narrow Upsilon(nS) resonances into final states R+gamma, with R resonant hadronic state decaying four or more charged particles. Such processes are not explicitly addressed in extant theoretical frameworks used calculate and must also be inserted Monte Carlo simulations. Using...