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  1. No Access

    Article

    Multifractal analysis of minimum bias events in \(\sqrt s \) = 630 GeV \(\bar p\) p collisions

    A search for multifractal structures, in analogy with multifractal theories, is performed on UA1 minimum bias events. A downward concave multifractal spectral function,f(α) (where α is the Lipschitz-Hölder expone...

    C. Albajar, O. C. Allkofer, R. Apsimon… in Zeitschrift für Physik C Particles and Fie… (1992)

  2. No Access

    Article

    Search for new heavy quarks in proton-antiproton collisions at \(\sqrt s = 0.63 TeV\)

    We report on a search for new heavy quarks decaying semileptonically into muons, using 4.7 pb−1 of data taken during the CERN $$p\bar ...

    C. Albajar, M. G. Albrow, O. C. Allkofer… in Zeitschrift für Physik C Particles and Fie… (1990)

  3. No Access

    Article

    Studies of intermediate vector boson production and decay in UA1 at the CERN proton-antiproton collider

    An extensive study of production and decay properties of charged and neutral Intermediate Vector Bosons (IVB) at the CERN proton-antiproton collider is presented. Intermediate Vector Bosons were detected in th...

    C. Albajar, M. G. Albrow, O. C. Allkofer… in Zeitschrift für Physik C Particles and Fie… (1989)

  4. No Access

    Article

    Study of heavy flavour production in events with a muon accompanied by jet(s) at the CERN proton-antiproton collider

    We present a study of heavy flavour (charm and beauty) production using data collected with the UA1 detector at the CERN Proton-Antiproton collider at a centre-of-mass energy of 630 GeV for an integrated lumin...

    C. Albajar, M. G. Albrow, O. C. Allkofer… in Zeitschrift für Physik C Particles and Fie… (1988)

  5. No Access

    Article

    Search for new heavy quarks at the CERN proton-antiproton collider

    We report on a search for new heavy quarks using data collected by the UA1 experiment during 1983, 1984 and 1985 at the CERN proton-antiproton collider, corresponding to an integrated luminosity of approximate...

    C. Albajar, M. G. Albrow, O. C. Allkofer… in Zeitschrift für Physik C Particles and Fie… (1988)

  6. No Access

    Article

    Derivation ofv μ/v μ and the spectra of neutrinos from pions and kaons produced by primary cosmic rays throughp-nucleus collisions

    The muon neutrino-antineutrino flux ratios, viz.,v μ/v μ generated from the decays of charged pions and kaons in atmosphere have been derived from the latest primary spectrum and the CERN ISRpp-collision data mod...

    O. C. Allkofer, D. P. Bhattacharyya in Astrophysics and Space Science (1987)

  7. No Access

    Article

    Some comments on the asymptotic limit of antiproton-proton flux ratio at the top of the atmosphere

    Using the leaky-box model the upper limit of the antiproton-proton flux ratio at the top of the atmosphere has been estimated from the latest primary nucleon spectrum and accelerator data on

    O. C. Allkofer, D. P. Bhattacharyya in Astrophysics and Space Science (1987)

  8. No Access

    Article

    Analysis of the highest transverse energy events seen in the UA 1 detector at the \(Sp\bar pS\) collider

    This is the first full solid angle analysis of large transverse energy events in \(p\bar p\) collisions at the CERN ...

    C. Albajar, M. G. Albrow, O. C. Allkofer… in Zeitschrift für Physik C Particles and Fie… (1987)

  9. No Access

    Chapter

    The Kiel EAS Experiment for Detecting UHE Gamma Rays

    A new air shower experiment specially designed for UHE gamma-ray astronomy is now under construction. It comprises 37 scintillation detectors of 1 m2 each. It is planned to install it at an altitude of 2200 m at ...

    O. C. Allkofer, M. Samorski, W. Stamm in Very High Energy Gamma Ray Astronomy (1987)

  10. No Access

    Article

    Derivation of muon range spectrum at different polar angles in deep underground from primary nucleon spectrum

    The energy spectra of sea-level muons at different zenith angles have been estimated from the latest JACEE primary spectrum using ISR results modified for p-nucleus interactions. The theoretical results have b...

    O. C. Allkofer, D. P. Bhattacharyya, Pratibha Pal in Il Nuovo Cimento C (1986)

  11. No Access

    Article

    The primary nucleon spectrum in the energy range 1 sE s 100 TeV

    O. C. Allkofer, D. P. Bhattacharyya… in Lettere al Nuovo Cimento (1971-1985) (1985)

  12. No Access

    Article

    W production properties at the CERN SPS Collider

    The production properties of a sample of 172 charged intermediate vector bosons produced at the CERN Super Proton Synchrotron Collider are described. The production cross-section, the longitudinal- and transve...

    G. Arnison, M. G. Albrow, O. C. Allkofer… in Lettere al Nuovo Cimento (1971-1985) (1985)

  13. No Access

    Article

    The flux of secondary anti-deuterons and antihelium produced in the interstellar medium

    Several measurements have been performed to find antiprotons in the primary cosmic radiation. Because it is difficult to get completely separated secondary produced antiprotons primary ones, calculations based...

    O. C. Allkofer, D. Brockhausen in Astrophysics and Space Science (1985)

  14. No Access

    Article

    The mass composition of the primary cosmic rays in the Low-TeV range derived from ground-level muon measurements

    With a magnetic spectrometer the charge ratio of muons was measured at sea-level up to an energy of 7 TeV. Using these data the primary mass composition,i.e. the ratio of neutrons of the primary mixture of nuclei...

    O. C. Allkofer, W. D. Dau, H. Jokisch, G. Klemke… in Lettere al Nuovo Cimento (1971-1985) (1984)

  15. No Access

    Chapter

    Future Muon and Neutrino Experiments

    There are several underground apparatus running or in construction. Although they are not all aimed for the same physics program, they share a general basic physics concept. The general physic program with asp...

    O. C. Allkofer in Composition and Origin of Cosmic Rays (1983)

  16. No Access

    Chapter

    Cosmic Ray Composition at 1012 – 1015 eV Derived from Muon Measurements

    The energy spectrum and the charge ratio of cosmic ray muons have been measured with magnetic spectrometers up to 10 TeV. Multi-muon events have been investigated with large apparatus in underground laboratori...

    O. C. Allkofer in Composition and Origin of Cosmic Rays (1983)

  17. No Access

    Article

    Electromagnetic interactions of cosmic-ray muons in iron

    We investigated the electromagnetic interactions of 2.5·104 cosmic-ray muons in a calorimeter consisting of optical spark chambers and iron plates. The muon energy was ranging from 2 GeV to 800 GeV and the transf...

    W. Stamm, A. Bäcker, C. Grupen, H. Jokisch, W. D. Dau… in Il Nuovo Cimento A (1965-1970) (1979)

  18. No Access

    Article

    The low-momentum muon spectrum near the equator

    O. C. Allkofer, K. Clausen, W. D. Dau in Lettere al Nuovo Cimento (1971-1985) (1975)

  19. No Access

    Article

    A survey on the recent measurements of the absolute vertical cosmic-ray muon flux at sea level

    A comparison of recent measurements of the absolute vertical intensities of muons in the momentum range (0.2÷10) GeV/c is presented. The results are consistent—within an error of 8%—with a form spectrum normal...

    O. C. Allkofer, H. Jokisch in Il Nuovo Cimento A (1965-1970) (1973)

  20. No Access

    Article

    The momentum spectra of cosmic-ray particles at sea level in the momentum range (0.05÷6) GeV/c

    O. C. Allkofer, P. Knoblich in Lettere al Nuovo Cimento (1969-1970) (1970)

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