R. Clare

ORCID: 0000-0003-3293-5305
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About
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Research Areas
  • 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
  • Cosmology and Gravitation Theories
  • Neutrino Physics Research
  • Astrophysics and Cosmic Phenomena
  • Medical Imaging Techniques and Applications
  • Black Holes and Theoretical Physics
  • Atomic and Subatomic Physics Research
  • Radiation Detection and Scintillator Technologies
  • Particle Accelerators and Free-Electron Lasers
  • Distributed and Parallel Computing Systems
  • Muon and positron interactions and applications
  • Radiation Therapy and Dosimetry
  • Superconducting Materials and Applications
  • Nuclear Physics and Applications
  • Gamma-ray bursts and supernovae
  • Laser-Plasma Interactions and Diagnostics
  • Nuclear physics research studies
  • International Science and Diplomacy
  • Big Data Technologies and Applications
  • Nuclear reactor physics and engineering

University of California System
2024-2025

University of California, Riverside
2016-2025

A. Alikhanyan National Laboratory
2022-2024

Institute of High Energy Physics
2012-2024

University of Antwerp
2024

University of California, San Diego
1992-2023

University of Maryland, College Park
2021

Kansas State University
2021

European Organization for Nuclear Research
2012-2013

University of California, Santa Barbara
2012

We report the analysis of spatial energy distribution data for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{hadrons}$ obtained with MARK-J detector at PETRA. define quantity "oblateness" to describe flat shape configuration and three-jet structure which is unambiguously observed first time. Our can be explained by quantum chromodynamic predictions production quark-antiquark pairs accompanied hard noncollinear gluons.

10.1103/physrevlett.43.830 article EN Physical Review Letters 1979-09-17

10.1016/0370-1573(86)90090-6 article EN Physics Reports 1986-08-01

This report summarizes the work of Energy Frontier Higgs Boson working group 2013 Community Summer Study (Snowmass). We identify key elements a precision physics program and document potential future experimental facilities as elucidated during Snowmass study. study couplings to gauge boson fermion pairs, double production for self-coupling, its quantum numbers $CP$-mixing in couplings, mass total width, prospects direct searches additional bosons extensions Standard Model. Our includes...

10.48550/arxiv.1310.8361 preprint EN other-oa arXiv (Cornell University) 2013-01-01

The reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ has been analyzed using 97 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data taken with the Crystal Ball detector at DESY ${e}^{\ensuremath{-}}{e}^{+}$ storage ring DORIS II beam energies around 5.3 GeV. For first time we have measured cross section for $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$...

10.1103/physrevd.41.3324 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1990-06-01

A search for exotic unstable neutral and charged heavy leptons as well stable is performed with the L3 detector at LEP. Sequential, vector mirror natures of are considered. No evidence their existence found lower limits on masses set.

10.1016/s0370-2693(01)01005-x article EN cc-by Physics Letters B 2001-09-01

Single- and multi-photon events with missing energy are selected in 619/pb of data collected by the L3 detector at LEP centre-of-mass energies between 189GeV 209GeV. The cross sections process e^+e^- -> nu gamma (gamma) found to be agreement Standard Model expectations, number light neutrino species is determined, including lower data, N_nu = 2.98 +/- 0.05 0.04. Selection results also given form tables which can used test future models involving single- signatures LEP. These final states...

10.1016/j.physletb.2004.01.010 article EN cc-by Physics Letters B 2004-03-24

The absolute muon flux between 20 GeV and 3000 is measured with the L3 magnetic spectrometer for zenith angles ranging from 0 degree to 58 degree. Due large exposure of about 150 m2 sr d, excellent momentum resolution chambers, a precision 2.3 % at in vertical direction achieved. ratio positive negative muons studied 500 GeV, average charge found be 1.285 +- 0.003 (stat.) 0.019 (syst.).

10.1016/j.physletb.2004.08.003 article EN cc-by Physics Letters B 2004-08-26

Scalar partners of quarks and leptons, predicted in supersymmetric models, are searched for e^+e^- collisions at centre-of-mass energies between 192GeV 209GeV LEP. No evidence any such particle is found a data sample 450 pb^-1. Upper limits on their production cross sections set lower masses derived the framework Minimal Supersymmetric Standard Model.

10.1016/j.physletb.2003.10.010 article EN cc-by Physics Letters B 2003-12-06

Measurements of the reactions ${e}^{+}+{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{+}+{e}^{\ensuremath{-}}$, ${\ensuremath{\mu}}^{+}+{\ensuremath{\mu}}^{\ensuremath{-}}$, and ${\ensuremath{\tau}}^{+}+{\ensuremath{\tau}}^{\ensuremath{-}}$ at PETRA energies (${s}^{\frac{1}{2}}=13,17,27.4,30 \mathrm{and} 31.6$ GeV) are reported. The results show that these agree well with predictions quantum electrodynamics thus determining all known charged leptons pointlike particles to a distance...

10.1103/physrevlett.43.1915 article EN Physical Review Letters 1979-12-24

We report on a search for the first generation heavy neutrino that is an isosinglet under standard SU(2)_L gauge group. The data collected with L3 detector at center-of-mass energies between 130 GeV and 208 are used.The decay channel N_e --> eW investigated no evidence found neutrino, N_e, in mass range 80 205 GeV. Upper limits mixing parameter light derived.

10.1016/s0370-2693(01)00993-5 article EN cc-by Physics Letters B 2001-09-01
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