A5021251716- 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
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Moravian Church and William Blake
- Themes in Literature Analysis
- Liver Disease Diagnosis and Treatment
- Ionosphere and magnetosphere dynamics
- Engineering and Materials Science Studies
- Earthquake Detection and Analysis
- Medical Imaging Techniques and Applications
- Fluid Dynamics Simulations and Interactions
- Atomic and Molecular Physics
- Health, Medicine and Society
- Structural Analysis of Composite Materials
Lancaster University
2016-2023
University of Sussex
2019-2023
University of Nevada, Las Vegas
2023
University of California, Los Angeles
2022-2023
University of Tennessee at Knoxville
2023
University of Bristol
2023
Goddard Space Flight Center
1966-2022
SRI International
2022
Clemson University
2022
Canterbury Christ Church University
2021
CLEO has studied B decays to πℓν, ρℓν, and ωℓν, where ℓ=eorμ, by incorporating the missing momentum into full reconstruction. With B0 B+ modes combined according isospin predictions for relative partial widths, we obtain B(B0→π−ℓ+ν)=(1.8±0.4±0.3±0.2)×10−4 B(B0→ρ−ℓ+ν)=(2.5±0.4+0.5−0.7±0.5)×10−4, errors are statistical, systematic, estimated model dependence. We also estimate |Vub|=(3.3±0.2+0.3−0.4±0.7)×10−3.Received 1 July 1996DOI:https://doi.org/10.1103/PhysRevLett.77.5000©1996 American...
We have searched for two-body charmless hadronic decays of B mesons. Final states include \ensuremath{\pi}\ensuremath{\pi}, K\ensuremath{\pi}, and KK with both charged neutral kaons pions: \ensuremath{\pi}\ensuremath{\rho}, K\ensuremath{\rho}, ${\mathit{K}}^{\mathrm{*}}$\ensuremath{\pi}; K\ensuremath{\varphi}, ${\mathit{K}}^{\mathrm{*}}$\ensuremath{\varphi}, \ensuremath{\varphi}\ensuremath{\varphi}. The data used in this analysis consist 2.6\ifmmode\times\else\texttimes\fi{}${10}^{6}$...
We study the exclusive semileptonic B meson decays ${\mathit{B}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\rightarrow}${\mathit{D}}^{\mathrm{*}0}$${\mathit{l}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\nu}\ifmmode\bar\else\textasciimacron\fi{} and B${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$\ensuremath{\rightarrow}${\mathit{D}}^{\mathrm{*}+}$${\mathit{l}}^{\mathrm{\ensuremath{-}}}$\ensuremath{\nu}\ifmmode\bar\else\textasciimacron\fi{} using data collected with CLEO II detector at...
Using the CLEO II detector and a sample of 955 000 \ensuremath{\Upsilon}(4S) decays we have confirmed charmless semileptonic B mesons. In momentum interval 2.3--2.6 GeV/c observe an excess 107\ifmmode\pm\else\textpm\fi{}15\ifmmode\pm\else\textpm\fi{}11 leptons, which attribute to b\ensuremath{\rightarrow}ul\ensuremath{\nu}. This result yields model-dependent range values for \ensuremath{\Vert}${\mathit{V}}_{\mathit{u}\mathit{b}}$/${\mathit{V}}_{\mathit{c}\mathit{b}}$\ensuremath{\Vert} that...
We have used the CLEO II detector and $2.06{\mathrm{fb}}^{\ensuremath{-}1}$ of $\ensuremath{\Upsilon}(4S)$ data to measure $B$-meson semileptonic branching fraction. The $B\ensuremath{\rightarrow}\mathrm{Xe}\ensuremath{\nu}$ momentum spectrum was obtained over nearly full range by using charge kinematic correlations in events with a high-momentum lepton tag an additional electron. find...
We have measured the B0B¯0 mixing probability, χd, using a sample of 965 000 BB¯ pairs from Υ(4S) decays. Counting dilepton events, we find χd=0.157±0.016±0.018−0.021+0.028. Using tagged B0 χd=0.149±0.023±0.019±0.010. The first (second) error is statistical (systematic). third reflects ±15% uncertainty in assumption, made both cases, that charged and neutral B contribute equally to events. also obtain limit on CP impurity Bd0 system, ‖Re(εB0)‖<0.045 at 90% C.L.Received 29 April...
The excited states of N=44 ^{74}Zn were investigated via γ-ray spectroscopy following ^{74}Cu β decay. By exploiting γ-γ angular correlation analysis, the 2_{2}^{+}, 3_{1}^{+}, 0_{2}^{+}, and 2_{3}^{+} in firmly established. branching E2/M1 mixing ratios for transitions deexciting measured, allowing extraction relative B(E2) values. In particular, 2_{3}^{+}→0_{2}^{+} 2_{3}^{+}→4_{1}^{+} observed first time. results show excellent agreement with new microscopic large-scale shell-model...
We have used the CLEO-II detector at Cornell Electron Storage Ringe (CESR) to study inclusive production of charmonium mesons in a sample 2.15 million BB¯ events. find branching fractions (1.12±0.04±0.06)% for B→J/ψX, (0.34±0.04±0.03)% B→ψ′X, and (0.40±0.06±0.04)% B→χc1X. also some evidence χc2, set an upper limit fraction decay B→ηcX 0.9% 90% confidence level. Momentum spectra J/ψ, ψ′, χc1 are presented. These measurements compared theoretical calculations.Received 13 December...
We present measurements of spectral moments extracted from the invariant mass distributions final states hadronic τ decay products recorded in CLEO detector. From a fit theoretical predictions to and total width τ, we determine strong coupling constant set non-perturbative QCD parameters. The is measured be αs(mτ) = 0.306 ± 0.024, which when extrapolated Z mass, yields αs(Mz) 0.114 0.003.
We consider the decay of Υ(1S) particles produced at CESR into a photon which is observed by CLEO detector plus are not seen. These could be real fall outside our acceptance, or noninteracting. report results search fo process Υ(1S)→γ+''unseen'' for energies >1 GeV, obtaining limits case where ''unseen'' either single particle particle-antiparticle pair. Our upper represent highest sensitivity measurements such decays to date.Received 11 August...
Kristen Petersen, BA Manager, EU MDR Specialist, Global Regulatory Writing and Consulting, St. George, UT
Increases in numbers and lengths of heat waves have previously been identified global temperature records, including locations within Europe. However, studies changes UK wave characteristics are limited. Historic daily maximum temperatures from 29 weather stations with records exceeding 85 years length across the country were examined. Heat defined as periods unusually high for each station, even if would not be considered warm an absolute sense. Positive trends at some stations. south east...
We search for the decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ in a sample of $2.2\ifmmode\times\else\texttimes\fi{}{10}^{6}$ charged $B$ using CLEO detector. see no evidence signal any channel and set upper limits on branching fractions...
The decay ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}\ensuremath{\eta}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ has been observed with the CLEO II detector. $\ensuremath{\eta}$ meson is reconstructed using two channels, $\ensuremath{\eta}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$ and ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$. measured branching fraction...
We report results from a search for the decays ${\mathit{B}}^{0}$\ensuremath{\rightarrow}${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$, ${\mathit{B}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$, and ${\mathit{B}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$. find 90% confidence level upper limits on branching fractions,...
Using the CLEO II detector at Cornell Electron Storage Ring, we have searched for flavor changing neutral currents and lepton family number violations in D0 meson decays. The upper limits on branching fractions D0→ℓ+ℓ− D0→X0ℓ+ℓ− are range 10−5 to 10−4, where X0 can be a π0, K0s, η, ρ0, ω, ¯K*0, or φ meson, ℓ+ℓ− pair e+e−, μ+μ−, e±μ∓. Although these above theoretical predictions, most new an order of magnitude lower than previous limits.Received 10 January...
Using data collected with the CLEO II detector at Cornell Electron Storage Ring, we have studied decays of τ leptons produced through e+e− annihilation into final states containing KS0 mesons, observed their to π+π−. We present branching fractions for five states: τ−→K0h−ντ, τ−→K0h−π0ντ, τ−→K0K−ντ, τ−→K0K−π0ντ, and τ−→KS0KS0h−ντ, where K0h− denotes sum processes involving K¯0π− K0K− particle combinations. Substructure mass spectra in these are also addressed.Received 10 January...
Using 1.79 ${\mathrm{fb}}^{\mathrm{\ensuremath{-}}1}$ of data recorded by the CLEO II detector we have measured absolute branching fraction for ${\mathit{D}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathrm{\ensuremath{\pi}}}^{+}$. The angular correlation between ${\mathrm{\ensuremath{\pi}}}^{+}$ emitted in decay ${\mathit{D}}^{\mathrm{*}+}$\ensuremath{\rightarrow}${\mathit{D}}^{0}$${\mathrm{\ensuremath{\pi}}}^{+}$, and jet direction...
With the CLEO-II detector at Cornell Electron Storage Ring, we have measured branching fractions for tau lepton decay into one-prong final states with multiple ${\mathrm{\ensuremath{\pi}}}^{0}$'s ${\mathit{B}}_{\mathit{h}\mathit{n}\mathrm{\ensuremath{\pi}}}^{0}$, normalized to fraction one charged particle and a single ${\mathrm{\ensuremath{\pi}}}^{0}$. We find...
Using data from the CLEO II detector at CESR, we measure ${\cal B}(\tau^\pm\rightarrow h^\pm\pi^0\nu_\tau)$ where $h^\pm$ refers to either $\pi^\pm$ or $K^\pm$. We use three different methods this branching fraction. The combined result is h^\pm\pi^0\nu_\tau) = 0.2587 \pm 0.0012 0.0042$, in good agreement with Standard Model predictions. This result, combination other precision measurements, reduces significance of one-prong problem tau decays. A postscript version available through...