A5076284541- 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
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- Scientific Computing and Data Management
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Virus-based gene therapy research
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- HIV Research and Treatment
- Veterinary Oncology Research
- Viral Infectious Diseases and Gene Expression in Insects
- Electron and X-Ray Spectroscopy Techniques
- Radioactive Decay and Measurement Techniques
- Immunotherapy and Immune Responses
Florida Department of State
1997-2025
University of Florida
2016-2025
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
Institute of High Energy Physics
2020-2024
Colorado State University
2004-2020
University of Tennessee at Knoxville
2020
European Organization for Nuclear Research
2012-2013
UCLouvain
2013
Austrian Academy of Sciences
2012
Using data collected with the CLEO detector operating at CESR e+e- collider sqrt[s]=3.97-4.26 GeV, we investigate 15 charmonium decay modes of psi(4040), psi(4160), and Y(4260) resonances. We confirm, 11 sigma significance, BABAR Y(4260)-->pi+pi- J/psi discovery, make first observation Y(4260)--> pi(0)pi(0) (5.1 sigma), find evidence for Y(4260)-->K+K- J/psi(3.7 sigma). measure cross sections sqrt[s]=4.26 GeV as sigma(pi+pi- J/psi)=58(+12)(-10)+/-4 pb, sigma(pi(0)pi(0) J/psi)=23(+12)(-8)+/-1...
We report the first evidence of charmless semileptonic decays B mesons. In momentum interval 2.4–2.6 GeV/c where background from b→clν is negligible, average measured b→ueν and b→uμν partial branching ratios ΔBub(2.4,2.6) =(1.8±0.4±0.3)×10−4. Inclusion data 2.2–2.4 GeV/c, lepton yield dominated by b→clν, gives ΔBub(2.2,2.6) =(3.3±0.8±0.8)×10−4. ‖Vub/Vcb‖ depends on theoretical model b→ulν decay approximately 0.1.Received 8 November 1989DOI:https://doi.org/10.1103/PhysRevLett.64.16©1990...
We have measured ${B}^{0}$B${\ifmmode\bar\else\textasciimacron\fi{}}^{0}$ mixing by observing like-sign dilepton events in \ensuremath{\Upsilon}(4S) decay. Assuming that the semileptonic branching fractions of charged and neutral B mesons are equal decays to ${B}^{+}$${B}^{\mathrm{\ensuremath{-}}}$ 55% time 45% time, we measure parameter r be 0.19\ifmmode\pm\else\textpm\fi{}0.06\ifmmode\pm\else\textpm\fi{}0.06, where first error is statistical second systematic.
We extract a relatively precise value for the decay constant of ${D}^{+}$ meson by measuring $\mathcal{B}({D}^{+}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}\ensuremath{\nu})=(4.40\ifmmode\pm\else\textpm\fi{}{0.66}_{\ensuremath{-}0.12}^{+0.09})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ using $281\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ data taken on $\ensuremath{\psi}(3770)$ resonance with CLEO-$c$ detector. find...
The Grid2003 Project has deployed a multivirtual organization, application-driven grid laboratory (Grid3) that sustained for several months the production-level services required by physics experiments of Large Hadron Collider at CERN (ATLAS and CMS), Sloan Digital Sky Survey project, gravitational wave search experiment LIGO, BTeV Fermilab, as well applications in molecular structure analysis genome analysis, computer science research projects such areas job data scheduling. infrastructure...
We have used the momentum spectrum of leptons produced in semileptonic $B$-meson decays to set a 90%-confidence-level upper limit on $\frac{\ensuremath{\Gamma}(b\ensuremath{\rightarrow}\mathrm{ul}\ensuremath{\nu})}{\ensuremath{\Gamma}(b\ensuremath{\rightarrow}\mathrm{cl}\ensuremath{\nu})}$ 4%. also measure branching fractions $B$ meson be (12.0\ifmmode\pm\else\textpm\fi{}0.7\ifmmode\pm\else\textpm\fi{}0.5)% for electrons and (10.8\ifmmode\pm\else\textpm\fi{}0.6\ifmmode\pm\else\textpm\fi{}1.0)% muons.
Measurements of the ${e}^{+}{e}^{\ensuremath{-}}$ cross section above $B\overline{B}$ threshold are reported. Structures observed which could be $\ensuremath{\Upsilon}(5S)$ and $\ensuremath{\Upsilon}(6S)$ resonances. The masses widths given compared with various potential-model predictions. Average charged multiplicities inclusive lepton yields also presented.
$B$-meson decays to final states consisting of a ${D}^{0}$ or ${D}^{*\ifmmode\pm\else\textpm\fi{}}$ and one two charged pions have been observed. The charged-$B$ mass is 5270.8 \ifmmode\pm\else\textpm\fi{} 2.3 2.0 MeV the neutral-$B$ 5274.2 1.9 MeV.
We use data collected with the CLEO II detector to perform a high-statistics measurement of resonant substructure in ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$ decays. find that Dalitz plot is well represented by combination seven quasi-two-body decay channels...
In e(+)e(-) collisions using the CLEO detector, we have studied decay of D0 to final state K(0)(S)pi(+)pi(-) with initial flavor tagged by D(*+)-->D0pi(+). We use Dalitz technique measure resonant substructure in this and clearly observe ten different contributions fitting for their amplitudes relative phases. a K(*)(892)(+)pi(-) component which arises from doubly Cabibbo suppressed decays or D0-D0; mixing.
The h(c)((1)P(1)) state of charmonium has been observed in the reaction psi(2S) --> pi(0)h(c) (gammagamma)(gammaeta(c)) using 3.08 x10(6) decays recorded CLEO detector. Data have analyzed both for inclusive reaction, where decay products eta(c) are not identified, and exclusive reactions, which reconstructed seven hadronic channels. We find M(h(c)) = 3524.4 +/- 0.6 0.4 MeV corresponds to a hyperfine splitting DeltaM(hf)(1P) triple-bond <M((3)P(J)) - M((1)P(1)) +1.0 MeV, B(psi(2S) pi(0)h(c))...
We report on the observation of ηc′(2S01), radial excitation ηc(1S01) ground state charmonium, in two-photon fusion reaction γγ→ηc′→KS0K±π∓ 13.6 fb−1 CLEO II/II.V data and 13.1 III data. obtain M(ηc′)=3642.9±3.1(stat)±1.5(syst) MeV M(ηc)=2981.8±1.3(stat)±1.5(syst) MeV. The corresponding values hyperfine splittings between S01 S13 states are ΔMhf(1S)=115.1±2.0 ΔMhf(2S)=43.1±3.4 Assuming that ηc ηc′ have equal branching fractions to KSKπ, we Γγγ(ηc′)=1.3±0.6 keV.Received 23 December...
Using $55.8\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of ${e}^{+}{e}^{\ensuremath{-}}$ collisions recorded at the $\ensuremath{\psi}(3770)$ resonance with CLEO-c detector CESR, we determine absolute hadronic branching fractions charged and neutral $D$ mesons using a double tag technique. Among measurements for three ${D}^{0}$ six ${D}^{+}$ modes, obtain reference...
We report results on the differential and total cross sections for inclusive production of charmed particles ${D}^{\mathrm{*}+}$, ${D}^{\mathrm{*}0}$, ${D}^{0}$, ${D}^{+}$, ${D}_{s}$, ${\mathrm{\ensuremath{\Lambda}}}_{\mathit{c}}$ in ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ annihilations at \ensuremath{\surd}s=10.55 GeV. Widely used quark fragmentation models are discussed compared with measured charmed-particle momentum distributions. This comparison, as well that...
We report measurements of single-particle inclusive spectra and two-particle correlations in decays the \ensuremath{\Upsilon}(1S) resonance nonresonant annihilations electrons positrons at center-of-mass energy 10.49 GeV, just below BB\ifmmode\bar\else\textasciimacron\fi{} threshold. These data were obtained using CLEO detector Cornell Electron Storage Ring (CESR) provide information on production \ensuremath{\pi}, K, \ensuremath{\rho}, ${K}^{\mathrm{*}}$, \ensuremath{\varphi}, p,...
Evidence is presented for a narrow meson resonance of mass 1970\ifmmode\pm\else\textpm\fi{}5\ifmmode\pm\else\textpm\fi{}5 MeV produced in continuum ${e}^{+}{e}^{\ensuremath{-}}$ annihilations at $\sqrt{s}$ 10.5 GeV, and decaying into $\ensuremath{\phi}$ charged $\ensuremath{\pi}$.
Nonsense-mediated RNA decay (NMD) is a surveillance mechanism that degrades transcripts containing nonsense mutations, preventing the translation of truncated proteins. NMD also regulates levels many endogenous mRNAs. While gradually understood, its physiological role remains largely unknown. The core genes upf1 and upf2 are essential in several organisms, which may reflect an important developmental for NMD. Alternatively, lethality these mutants might arise from their function...
We present final measurements of 13 charmless hadronic B decay modes from the CLEO experiment. The include ten ππ, Kπ, and KK states new limits on dibaryonic states, p¯p, p¯Λ, Λ¯Λ, as well a determination ratio B(→BDK)/B(→BDπ). results are based full II III data samples totalling 15.3fb−1 at Υ(4S), supercede previously published results.Received February 2003Corrected 6 June 2007DOI:https://doi.org/10.1103/PhysRevD.68.052002©2003 American Physical Society
We have used the measured yield of leptons near end point momentum spectrum from semileptonic B decay to obtain an upper limit on \ensuremath{\Gamma}(b\ensuremath{\rightarrow}ul\ensuremath{\nu})/\ensuremath{\Gamma}(b\ensuremath{\rightarrow}cl\ensuremath{\nu}) and a corresponding \ensuremath{\Vert}${V}_{\mathrm{ub}}$\ensuremath{\Vert}/\ensuremath{\Vert}${V}_{\mathrm{cb}}$\ensuremath{\Vert}.
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...
We have measured the first and second moments of hadronic mass-squared distribution in B-->X(c)l nu, for P(lepton)>1.5 GeV/c. find <M(2)(X)-M macro(2)(D)> = 0.251+/-0.066 GeV(2), <(M(2)(X)-<M(2)(X)>)(2)> 0.576+/-0.170 GeV(4), where M macro(D) is spin-averaged D meson mass. From that moment photon energy spectrum b-->s gamma, we heavy quark effective theory parameter lambda(1) (in modified minimal subtraction renormalization scheme, to order 1/M(3)(B) beta(0)alpha(2)(s)) be -0.24+/-0.11...
We report a new measurement of the CKM parameter V_ub made with sample 9.7 million B B-bar events collected CLEO II detector. Using Heavy Quark theory, we combine observed yield leptons from semileptonic decay in end-point momentum interval 2.2-2.6 GeV/c recent data on --> X_s gamma to find |V_ub| = (4.08 +/- 0.34 0.44 0.16 0.24) x 10^-3, where first two uncertainties are experimental and last theory.
We report on determinations of |Vub| resulting from studies the branching fraction and q^2 distributions in exclusive semileptonic B decays that proceed via b->u transition. Our data set consists 9.7x10^6 BBbar meson pairs collected at Y(4S) resonance with CLEO II detector. measure B(B0 -> pi- l+ nu) = (1.33 +- 0.18 0.11 0.01 0.07)x10^{-4} rho- (2.17 0.34 +0.47/-0.54 0.41 0.01)x10^{-4}, where errors are statistical, experimental systematic, systematic due to residual form-factor...