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23 Result(s)

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  1. No Access

    Article

    Improved tau polarisation measurement

    Using 22 pb−1 of data collected at LEP in 1992 on the peak of the Z resonance, the ALEPH collaboration has measured the polarisation of the tau leptons decaying into

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  2. No Access

    Article

    Measurements of the charged particle multiplicity distribution in restricted rapidity intervals

    Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals |Y| ≤0.5, 1.0, 1.5, 2.0 along the thrust axis and also without restriction on rapidity. The ...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  3. No Access

    Article

    Inclusive production of neutral vector mesons in hadronic Z decays

    Data on the inclusive production of the neutral vector mesonsρ 0(770),ω(782), K*0(892), andφ(1020) in hadronic Z decays recorded with the ALEPH detector at LEP are presented and compared t...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  4. No Access

    Article

    Measurement ofD s + meson production inZ decays and of theB s 0 lifetime

    D s + mesons produced inZ 0→bb events were separated from theZ ...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  5. No Access

    Article

    First measurement of the quark-to-photon fragmentation function

    Earlier measurements at LEP of isolated hard photons in hadronic Z decays, attributed to radiation from primary quark pairs, have been extended in the ALEPH experiment to include hard photon productioninside hadr...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  6. No Access

    Article

    Production of excited beauty states inZ decays

    A data sample of about 3.0 million hadronicZ decays collected by the ALEPH experiment at LEP in the years 1991 through 1994 is used to make an inclusive selection of B hadron events. In this event sample 4227±140...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  7. No Access

    Article

    Inclusive π±, K± and \((p,\bar p)\) differential cross-sections at the Z resonance

    Inclusive π±, K± and \((p,\bar p)\) differential cross-sections in hadronic decays of the Z have been measured as a ...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  8. No Access

    Article

    Study of the four-fermion final state at the Z resonance

    The process e+e−→, where l is a charged or a neutral lepton and f any charged fermion, is analyzed. The study uses the ALEPH data collected at LEP from 1989 to 1993 at centre-of-mass energies between 88 and 95 Ge...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1995)

  9. No Access

    Article

    Z production cross sections and lepton pair forward-backward asymmetries

    Precise values of theZ resonance cross sections and lepton pair forward-backward asymmetries are measured from a sample of 1.3 millionZ decays into hadrons and charged leptons taken with the ALEPH detector at LEP...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1994)

  10. No Access

    Article

    Production ofK 0 and Λ in hadronic Z decays

    Measurements of the inclusive cross-sections forK 0 and Λ production in hadronic decays of the Z are presented together with measurements of two-particle correlations within pairs of Λ andK 0. The results are com...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1994)

  11. No Access

    Article

    Heavy flavour production and decay with prompt leptons in the ALEPH detector

    In 431 000 hadronicZ decays recorded with the ALEPH detector at LEP, the yields of electrons and muons in events with one or more prompt leptons have been analysed to give information on the production and decay ...

    D. Buskulic, D. Casper, I. De Bonis… in Zeitschrift für Physik C Particles and Fie… (1994)

  12. No Access

    Article

    Production of charmed mesons inZ decays

    The production of charmed mesons \(\mathop {D^0 }\limits^{( - )} \) ,D ± , andD ...

    D. Buskulic, I. De Bonis, D. Decamp, P. Ghez… in Zeitschrift für Physik C Particles and Fie… (1994)

  13. No Access

    Article

    Measurement of the tau polarisation at the Z resonance

    Using 18.8 pb−1 of data collected in 1990 and 1991, ALEPH has measured the tau polarisation in the decay modes τ→ev \(\bar v\) ...

    D. Buskulic, D. Decamp, C. Goy, J. -P. Lees… in Zeitschrift für Physik C Particles and Fie… (1993)

  14. No Access

    Article

    Search for contact interactions in the reactionse + e −→l + l − ande + e −→γγ

    Contact interactions are searched for using the differential cross sections for the reactionse + e −→e + e −,e + e −→µ + µ −,e + e −→τ + τ − ande + e −→γγ measured at 12 energies around theZ peak and correspondin...

    D. Buskulic, D. Decamp, C. Goy, J. -P. Lees… in Zeitschrift für Physik C Particles and Fie… (1993)

  15. No Access

    Article

    Update of electroweak parameters fromZ decays

    Based on 520 000 fermion pairs accumulated during the first three years of data collection by the ALEPH detector at LEP, updated values of the resonance parameters of theZ are determined to beM ...

    D. Buskulic, D. Decamp, C. Goy, J. -P. Lees… in Zeitschrift für Physik C Particles and Fie… (1993)

  16. No Access

    Article

    Measurement of prompt photon production in hadronicZ decays

    The production of isolated photons in hadronicZ decays is measured with the ALEPH detector at LEP using a sample of 450 000 hadronic events. The corrected rate is given for several values of the minimum invariant...

    D. Buskulic, D. Decamp, C. Goy, J. -P. Lees… in Zeitschrift für Physik C Particles and Fie… (1993)

  17. No Access

    Article

    Measurement of the absolute luminosity with the ALEPH detector

    We report on the absolute luminosity measurement performed with the ALEPH detector at LEP. The systematic errors of the measurements in 1990 are estimated to be 0.6% (experimental) and 0.3% (theoretical).

    D. Decamp, B. Deschizeaux, C. Goy… in Zeitschrift für Physik C Particles and Fie… (1992)

  18. No Access

    Article

    Measurement of Tau branching ratios

    Using the data accumulated at LEP in 1989 and 1990 with the ALEPH detector, the inclusive and exclusive branching ratios of the τ lepton have been measured assuming lepton universality inZ 0 decays. The inclusive...

    D. Decamp, B. Deschizeaux, C. Goy… in Zeitschrift für Physik C Particles and Fie… (1992)

  19. No Access

    Article

    Properties of hadronicZ decays and test of QCD generators

    Distributions are presented of event shape variables, jet roduction rates and charged particle momenta obtained from 53 000 hadronicZ decays. They are compared to the predictions of the QCD+hadronization models J...

    D. Buskulic, D. Decamp, C. Goy, J. P. Lees… in Zeitschrift für Physik C Particles and Fie… (1992)

  20. No Access

    Article

    An investigation into intermittency

    The results of an investigation based on ALEPH data,e + e − → hadrons at \(\sqrt s = 91\) GeV, into fluctuations in...

    D. Decamp, B. Deschizeaux, C. Goy… in Zeitschrift für Physik C Particles and Fie… (1992)

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