Publications (303)4.59 Total impact
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Article: The Solar Flare of the 14th of July 2000 (L3+C detector results)
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ABSTRACT: Several experiments have reported observations on possible correlations between the flux of high energy muons and intense solar flares. If confirmed, these observations would have significant implications for acceleration processes in the heliosphere able to accelerate protons and other ions to energies of at least tens of GeV. The solar flare of the 14 July 2000 offers a unique opportunity for the L3+C experiment to search for a correlated enhancement in the flux of muons using the L3 precision muon spectrometer. Its capabilities for observing a directional excess in the flux of muons above 15 GeV (corresponding to primary proton energies above 40 GeV) are presented along with observations made on the 14th of July 2000. We report an excess which appeared at a time coincident with the peak increase of solar protons observed at lower energies. The probability that the excess is a background fluctuation is estimated to be 1%. No similar excess of the muon flux was observed up to 1.5 hours after the solar flare time.Astronomy and Astrophysics 11/2006; 456:351-357. · 4.59 Impact Factor -
Article: Measurement of hadronic shower punchthrough in magnetic field
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ABSTRACT: The total punchthrough probability of showers produced by negative pions, positive pions, positive kaons and protons, has been measured as a function of depth in an absorber in a magnetic field ranging from 0 to 3 Tesla. The incident particle momentum varied from 10 to 300 GeV/c. The lateral shower development and particle multiplicity at several absorber depths have been determined. The measurements are compared with the predictions of Monte Carlo simulation programs.Zeitschrift für Physik C 11/1995; -
Article: A Direct determination of the number of light neutrino families from $e^+ e^- \to$ neutrino antineutrino $\gamma$ at LEP
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Article: Protons in near earth orbit
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ABSTRACT: The proton spectrum in the kinetic energy range 0.1 to 200 GeV was measuredby the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 atan altitude of 380 km. Above the geomagnetic cutoff the observed spectrum isparameterized by a power law. Below the geomagnetic cutoff a substantial secondspectrum was observed concentrated at equatorial latitudes with a flux ~ 70m^-2 sec^-1 sr^-1. Most of these second spectrum protons follow a complicatedtrajectory and originate from a restricted geographic region. -
Article: Determination of quark electroweak couplings from direct photon production in hadronic Z decays
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Article: A search for the neutral Higgs boson at LEP
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Article: Results from the L3 experiment at LEP
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Article: Search for narrow vector resonances in the Z mass range
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Article: Search for a Z' at the Z resonance
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Article: Measurement of $\Gamma_{b\overline{b}}$/$\Gamma_{had}$ from hadronic decays of the Z
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Article: Determination of the effective electroweak mixing angle from Z decays
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Article: Inclusive search for the charmless radiative decay of the b-quark (b --> s$\gamma$)
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Article: An S matrix analysis of the Z resonance
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Article: Measurement of the average lifetime of b hadrons
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Article: $\chi_{c}$ production in hadronic Z decays
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Article: Search for lepton flavour violation in Z decays
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Article: Measurement of $\eta_{c}$ production in untagged two-photon collisions at LEP
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Article: A study of four-fermion processes at LEP
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Article: Measurement of inclusive production of neutral hadrons from Z decays
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Article: Measurement of inclusive b --> $\tau\nu$X branching ratio
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Institutions
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1995
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Imperial College London
London, ENG, United Kingdom
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