A5054410423- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Galaxies: Formation, Evolution, Phenomena
- Black Holes and Theoretical Physics
- Software Engineering Research
- Software Reliability and Analysis Research
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Muon and positron interactions and applications
- Astronomy and Astrophysical Research
- Quantum, superfluid, helium dynamics
- Atomic and Molecular Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Alcohol Consumption and Health Effects
- Neurological and metabolic disorders
- Leaf Properties and Growth Measurement
- Genetic factors in colorectal cancer
- Text Readability and Simplification
Nanjing University
2015-2025
California Institute of Technology
1998-2021
Virginia Tech
2013-2017
University of Hawaii System
1999-2017
Brookhaven National Laboratory
2017
East China Normal University
2016
Tsinghua University
2013
University of Hawaiʻi at Mānoa
1997-2001
University of Oklahoma
2001
University of California, Santa Barbara
2000
Using the CLEO II detector, we have measured differential cross sections for exclusive two-photon production of light pseudoscalar mesons ${\ensuremath{\pi}}^{0},$ \ensuremath{\eta}, and ${\ensuremath{\eta}}^{\ensuremath{'}}.$ From our measurements obtained form factors associated with electromagnetic transitions ${\ensuremath{\gamma}}^{*}\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\gamma}}\mathrm{meson}.$ We these in momentum transfer ranges from 1.5 to 9, 20, $30{\mathrm{GeV}}^{2}$...
Based on a sample corresponding to 4.3 million produced tau-pair events, we have studied hadronic dynamics in the decay tau- --> nu_tau pi- pi0 data recorded by CLEO II detector operating at CESR e+e- collider. The is dominated process tau a_1(1260), with a_1 meson decaying three pions predominantly via lowest dimensional (mainly S-wave) rho pi Born amplitude. From fits Dalitz plot and angular observables, find significant additional contributions from amplitudes for sigma pi, f_0(1370)...
In recent years, pre-trained language models have seen significant success in natural processing and been increasingly applied to code-related tasks. Code intelligence tasks shown promising performance with the support of code models. Pre-processing simplification methods introduced prune tokens from model’s input while maintaining task effectiveness. These improve efficiency reducing computational costs. Post-prediction provide explanations for outcomes, enhancing reliability...
In a sample of $6.6\ifmmode\times\else\texttimes\fi{}{10}^{6}$ produced $B$ mesons we have observed decays $B\ensuremath{\rightarrow}{\ensuremath{\eta}}^{\ensuremath{'}}K$, with branching fractions $B({B}^{+}\ensuremath{\rightarrow}{\ensuremath{\eta}}^{\ensuremath{'}}{K}^{+})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}({6.5}_{\ensuremath{-}1.4}^{+1.5}\ifmmode\pm\else\textpm\fi{}0.9)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and...
We use ultradeep SCUBA-2 850um observations (~0.37 mJy rms) of the 2 Ms Chandra Deep Field-North (CDF-N) and 4 Field-South (CDF-S) X-ray fields to examine amount dusty star formation taking place in host galaxies high-redshift AGNs. Supplementing with COSMOS, we measure submillimeter fluxes 4-8 keV sources at z>1, finding little flux highest luminosities but significant intermediate luminosities. determine gray body MIR by fitting spectral energy distributions each source radio an Karl G....
We study the processes $\gamma \gamma \to \eta_c \eta' K^+ K^-$, $\eta' \pi^+ \pi^-$, and $\eta \pi^-$ using a data sample of 519 $fb^{-1}$ recorded with BaBar detector operating at SLAC PEP-II asymmetric-energy $e^+e^-$ collider center-of-mass energies near $\Upsilon(nS)$ ($n = 2,3,4$) resonances. This is first observation decay $\eta_c K^-$ we measure branching fraction $\Gamma(\eta_c K^-)/(\Gamma(\eta_c \pi^-)=0.644\pm 0.039_{\rm stat}\pm 0.032_{\rm sys}$. Significant interference...
We discuss a technique for measuring charged particle's momentum by means of multiple Coulomb scattering (MCS) in the MicroBooNE liquid argon time projection chamber (LArTPC). This method does not require full particle ionization track to be contained inside detector volume as other reconstruction methods do (range-based and calorimetric reconstruction). motivate use this technique, describe tuning underlying phenomenological formula, quantify its performance on fully beam-neutrino-induced...
We present a new determination of ${f}_{{D}_{s}}$ using 5 million ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}c\overline{c}$ events obtained with the CLEO II detector. Our value is derived from our measured ratio $\ensuremath{\Gamma}{(D}_{s}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}\ensuremath{\nu})/\ensuremath{\Gamma}{(D}_{s}^{+}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+})=0.173\ifmmode\pm\else\textpm\fi{}0.023\ifmmode\pm\else\textpm\fi{}0.035$. Using...
Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair excited charmed baryons, one decaying into Λ+cπ+ and other Λ+cπ−. The doubly charged state has measured mass difference M(Λ+cπ+)−M(Λ+c) 234.5±1.1±0.8 MeV/c2 width 17.9+3.8−3.2±4.0MeV/c2, neutral M(Λ+cπ−)−M(Λ+c) 232.6±1.0±0.8 13.0+3.7−3.0±4.0MeV/c2. We interpret these as Σ*++c Σ*0c, spin 32+ excitations Σc baryons.Received 26 September 1996DOI:https://doi.org/10.1103/PhysRevLett.78.2304©1997 American Physical Society
We present new measurements of the large scale clustering component cross-power spectra source-subtracted Spitzer-IRAC Cosmic Infrared Background (CIB) and Chandra-ACIS X-ray (CXB) surface brightness fluctuations. Our investigation uses data from Chandra Deep Field South (CDFS), Hubble North (HDFN), EGS/AEGIS field UDS/SXDF surveys, comprising 1160 Spitzer hours $\sim$ 12 Ms collected over a total area 0.3 deg$^2$. report first ($>$5$\sigma$) detection signal on angular scales >20 arcsec...
We have observed the decay ${B}^{+}\ensuremath{\rightarrow}{\overline{D}}^{0}{K}^{+}$, using $3.3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected with CLEO II detector at Cornell Electron Storage Ring. find ratio of branching fractions...
Neutrinoless 3-prong tau lepton decays into a charged and either two particles or one neutral meson have been searched for using 4.79 fb^{-1} of data collected with the CLEO II detector at CESR. This analysis represents an update previous study addition six decay channels. In all channels numbers events found are compatible background estimates branching fraction upper limits set 28 different modes. These more stringent than those previously represent first attempt to find these decays.
Using a sample of 4.7 ${\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity accumulated with the CLEO II detector at Cornell Electron Storage Ring (CESR), we investigate mass spectrum and resonant structure in ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ decays. We measure relative fractions ${K}_{1}(1270)$ ${K}_{1}(1400)$ resonances these decays, as well...
We study the properties of satellites in environment massive star-forming galaxies at z~1.8 COSMOS field, using a sample 215 on main sequence star formation with an average mass 10^11 Msun. At z>1.5, these typically trace halos >10^13 use optical-near-infrared photometry to estimate stellar masses and rates (SFR) centrals down ~6*10^9 stack data around central statistically detect their satellite halos, finding ~3 excess background density. fit radial profiles simple beta-models, compare...
We report measurements of the $D^0, D^+$, and $D^+_s$ meson lifetimes using $3.7 fb^{-1}$ e^+e^- annihilation data collected near $\Upsilon(4S)$ resonance with CLEO detector. The mesons are measured to be $408.5 \pm 4.1 ^{+3.5}_{-3.4} fs, 1033.6 22.1 ^{+9.9}_{-12.7} fs$, $486.3 15.0 ^{+4.9}_{-5.1} respectively. precisions charm reported here comparable those best previous measurements, systematic errors very different. In a single experiment we find that ratio $D^0$ differs from one by more...
We report results of a search for B-->tau(nu) in sample 9.7 x 10(6) charged B meson decays. exclusively reconstruct the companion decay to suppress background. set an upper limit on branching fraction B(B-->tau(nu))<8.4 10(-4) at 90% confidence level. also establish B(B+/--->K+/-nu(nu))<2.4
We report the first search for ${J}^{PC}={0}^{\ensuremath{-}\ensuremath{-}}$ glueball in $\mathrm{\ensuremath{\Upsilon}}(1S)$ and $\mathrm{\ensuremath{\Upsilon}}(2S)$ decays with data samples of $(102\ifmmode\pm\else\textpm\fi{}2)\ifmmode\times\else\texttimes\fi{}1{0}^{6}$ $(158\ifmmode\pm\else\textpm\fi{}4)\ifmmode\times\else\texttimes\fi{}1{0}^{6}$ events, respectively, collected Belle detector. No significant signals are observed any proposed production modes, 90% credibility level upper...
Using 13.4 fb(-1) of data collected with the CLEO detector at Cornell Electron Storage Ring, we have observed 300 events for two-photon production ground-state pseudoscalar charmonium in decay eta(c)-->K(0)(S)K-/+pi(+/-). We measured eta(c) mass to be [2980.4+/-2.3 (stat)+/-0.6 (syst)] MeV and its full width as [27.0+/-5.8 (stat)+/-1.4 MeV. determined partial meson [7.6+/-0.8 (stat)+/-0.4 (syst)+/-2.3 (br)] keV, last uncertainty associated branching fraction.
Using data recorded by the CLEO-II detector at CESR we have searched for four radiative decay modes of $D^0$ meson: $D^0\to\phi\gamma$, $D^0\to\omega\gamma$, $D^0\to\bar{K}^{*}\gamma$, and $D^0\to\rho^0\gamma$. We obtain 90% CL upper limits on branching ratios these $1.9\times 10^{-4}$, $2.4\times $7.6\times 10^{-4}$ respectively.
We have studied the decay ¯B→Dl¯ν, where l=e or μ. From a fit to differential rate dγ/dw we measure normalization FD(1)|Vcb| and form factor slope ^ρ2D, and, using measured values of τB, find γ(¯B→Dl¯ν)=(12.0±0.9±2.1)ns−1. The resulting branching fractions are B(¯B0→D+l−¯ν)=(1.87±0.15±0.32)% B(B−→D0l−¯ν)=(1.94±0.15±0.34)%. parameters in agreement with those ¯B→D∗l¯ν decays, as predicted by heavy quark effective theory.Received 30 May 1997DOI:https://doi.org/10.1103/PhysRevLett.79.2208©1997...
Using samples of 102 million $\Upsilon(1S)$ and 158 $\Upsilon(2S)$ events collected with the Belle detector, we study exclusive hadronic decays these two bottomonium resonances to $\ks K^+ \pi^-$ charge-conjugate (c.c.) states, $\pi^+ \pi^- \pi^0 \pi^0$, two-body Vector-Pseudoscalar ($K^{\ast}(892)^0\bar{K}^0+ {\rm c.c.}$, $K^{\ast}(892)^-K^+ + $\omega\pi^0$, $\rho\pi$) final states. For first time, signals are observed in modes $\Upsilon(1S) \to \ks $\Upsilon(2S) \pi^+ evidence is found for...
We report branching fraction measurements of the decays ${B}^{+}\ensuremath{\rightarrow}\ensuremath{\eta}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ and ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\eta}}^{\ensuremath{'}}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}$ based on $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data collected near $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance with Belle experiment at KEKB asymmetric-energy...
The decays $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$, followed by $B\ensuremath{\rightarrow}{D}^{*}\ensuremath{\pi}$ and ${D}^{*}\ensuremath{\rightarrow}D\ensuremath{\pi}$, permit reconstruction of all kinematic quantities that describe the sequence without $D$, with reasonably low backgrounds. Using an integrated ${e}^{+}{e}^{\ensuremath{-}}$ luminosity $3.1{\mathrm{fb}}^{\ensuremath{-}1}$ accumulated at $\ensuremath{\Upsilon}(4S)$ CLEO-II detector, we report...
A study of charm fragmentation into Ds*+ and Ds+ in e+e− annihilations at s=10.5 GeV is presented. This using 4.72±0.05 fb−1 CLEO II data reports measurements the cross sections σ(Ds*+) σ(Ds+) momentum regions above x=0.44, where x Ds divided by maximum kinematically allowed momentum. The vector to plus pseudoscalar production ratio measured be PV(x(Ds+)>0.44)=0.44±0.04. Received 25 April 2000DOI:https://doi.org/10.1103/PhysRevD.62.072003©2000 American Physical Society