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  1. No Access

    Chapter

    The Mark-J Vertex Detector

    A high-resolution drift chamber based on the time expansion principle has been built as a vertex detector for the Mark-J experiment at DESY. Results on the chamber performance obtained from test beam measureme...

    H. Anderhub, H. Anders, S. Ansari, A. Boehm, M. Bourquin, J. Burger… in Vertex Detectors (1988)

  2. No Access

    Article

    Measurement of electroweak parameters from hadronic and leptonic decays of theZ 0

    We have studied the reactionse + e −→hadrons,e + e −, μ+ μ− and τ+ τ−, in the energy range 88.2 \( \leqq \sqrt s \leqq 94.2\) ...

    B. Adeva, O. Adriani, M. Aguilar-Benitez… in Zeitschrift für Physik C Particles and Fie… (1991)

  3. No Access

    Article

    Studies of hadronic event structure and comparisons with QCD models at theZ 0 resonance

    The structure of hadronic events fromZ 0 decay is studied by measuring event shape variables, factorial moments, and the energy flow distribution. The distributions, after correction for detector effects and init...

    B. Adeva, O. Adriani, M. Aguilar-Benitez… in Zeitschrift für Physik C Particles and Fie… (1992)

  4. No Access

    Article

    Search for non-minimal Higgs bosons inZ 0 decays

    We report on a search for the neutral and charged Higgs bosons predicted by models of spontaneous symmetry breaking with more than one Higgs doublet field. No signals are observed. We set model-independent lim...

    O. Adriani, M. Aguilar-Benitez, S. Ahlen… in Zeitschrift für Physik C Particles and Fie… (1993)

  5. No Access

    Article

    Measurement of cross sections and leptonic forward-backward asymmetries at theZ pole and determination of electroweak parameters

    We report on the measurement of the leptonic and hadronic cross sections and leptonic forward-backward asymmetries at theZ peak with the L3 detector at LEP. The total luminosity of 40.8 pb−1 collected in the year...

    M. Acciarri, A. Adam, O. Adriani… in Zeitschrift für Physik C Particles and Fie… (1994)

  6. No Access

    Article

    Measurement of the branching ratiosb →e ν X, μ ν X, τ ν X andν X

    The inclusive semileptonic branching ratios b→eνX,μ νX,τ νX andνX have been measured at LEP with the L3 detector. The analysis is based on 2-jet hadronic Z decays obtained in the data collected between 1991 and 1...

    M. Acciarri, A. Adam, O. Adriani… in Zeitschrift für Physik C Particles and Fie… (1996)

  7. No Access

    Article

    A silicon microstrip tracker in space: Experience with the AMS silicon tracker on STS-91

    The Alpha Magnetic Spectrometer (AMS) is designed as an independent module for installation on the International Space Station (ISS) in the year 2003 for an operational period of three years. The principal sci...

    J. Alcaraz, B. Alpat, G. Ambrosi, P. Azzarello… in Il Nuovo Cimento A (1971-1996) (1999)

  8. No Access

    Article

    Search for neutral MSSM Higgs bosons at LEP

    The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric standard model (MSSM). The data of the four collaborations ...

    S. Schael, R. Barate, R. Brunelière… in The European Physical Journal C - Particle… (2006)

  9. No Access

    Article

    Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP

    Measurements of inclusive production of the Λ, Ξ- and Ξ*(1530) baryons in two-photon collisions with the L3 detector at LEP are presented. The inclusive differential cross sections for Λ and Ξ- are measured as a ...

    P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz… in The European Physical Journal C (2007)

  10. No Access

    Article

    Laser mode selection in reflective multipass optical cavity

    The performance of a simple resonator that couples a reflective multipass interferometer cavity and a Fabry-Pérot etalon to obtain high efficiency tunable single-longitudinal mode (SLM) oscillation in a TEA CO2 l...

    Y. Wang, Y. Qu, W. Zhao, D. Ren, C. Jiao, Z. Liang in Applied Physics B (2010)

  11. Article

    Open Access

    Test of the τ-model of Bose–Einstein correlations and reconstruction of the source function in hadronic Z-boson decay at LEP

    Bose–Einstein correlations of pairs of identical charged pions produced in hadronic Z decays are analyzed in terms of various parametrizations. A good description is achieved using a Lévy stable distribution i...

    P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz… in The European Physical Journal C (2011)

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  12. No Access

    Article

    Generalized event shape and energy flow studies in e+e− annihilation at \( \sqrt {s} = 91.2{ - }208.0 \) GeV

    We present results from a study of hadronic event structure in high energy e+e− interactions using the L3 detector at LEP. A new class of event shape distributions are measured at and above the Z boson pole for l...

    P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz… in Journal of High Energy Physics (2011)