Observation of KsKs meson resonances in DIS at HERA (96-00)

M. Barbi (McGill), S. Paganis (Columbia)

  • ZEUS note v1.0 (June 1 2003)

  • Talk at ZEUS meeting 17/Mar/03 asking for preliminary approval

  • PreReading Version 3.8 (Apr 25 2003)

  • Paper Version 3.7 (Apr 12 2003)

    • If you have comments or suggestions, email us at
    paganis@nevis1.columbia.edu
    barbi@mail.desy.de

    Access a Single Huge Web page (including first and second analysis) for printing (recommended)

    1. Editorial Board Issues
    2. Analysis Scheme
    3. DIS Control Plots

      • Q2 distribution (comparison with MC)
      • E-Pz distribution (comparison with MC)
      • Electron Energy (comparison with MC)

    4. Ks eta, pt and Mass (Data and MC) distributions

      • Ks1 and Ks2 mass distributions
      • Ks1 and Ks2 pseudorapidity
      • Ks1 and Ks2 pt
      • pion1Ks1, pion2Ks1, pion1Ks2, pion2Ks2 eta and pt

    5. Final Sample distributions

      • Q2da, Wda, eta(KsKs) and number of tracks.

    6. Ks1 and Ks2 efficiency vs background study using Tracking Quality cuts (MC)

      • Motivation of the study
      • Explanation of tracking quality cuts
      • Ks efficiency, purity and background for each cut.

    7. KsKs Invariant Mass and comparison between the 2 analyses
    8. Systematic checks on statistical significance
    9. Monte Carlo including resonances

      • KsKs mass from std DIS/Ariadne MC
      • KsKs mass from DIS/Ariadne MC including resonances
      • The KsKs threshold region (f980, Bose Einstein or Systematic?)
      • f0(980), f2(1270), f2(1525), f(1710) Mass resolutions from MC

    10. Laze Figures of f0(980) candidates
    11. Relevant Papers Experiments and talks