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V. Šimák D0 experiment and CTU Prague

Measurement of the differential cross section d σ / dt in ela stic antiproton-proto n scattering at. V. Šimák D0 experiment and CTU Prague. for D0 experiment. Motivation. Elastic scattering - first results in any hadrons' experiment. Several phenomenology models:

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V. Šimák D0 experiment and CTU Prague

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  1. Measurement of the differential cross section dσ/dt in elasticantiproton-proton scattering at V. Šimák D0 experiment and CTU Prague for D0 experiment V. Šimák, D0 FNAL and CTU Prague

  2. Motivation Elastic scattering - first results in any hadrons' experiment V. Šimák, D0 FNAL and CTU Prague

  3. Several phenomenology • models: • Geometrical scaling • Clouds structure • ……. L.M. Dremin: aXiv. 1206.5474v1 [hep] 24. Jan. 1012 V. Šimák, D0 FNAL and CTU Prague

  4. In Run II at Tevatron: D0 + PFD (2002) Covered regions for scattered protons/antiprotons V. Šimák, D0 FNAL and CTU Prague

  5. V. Šimák, D0 FNAL and CTU Prague

  6. V. Šimák, D0 FNAL and CTU Prague

  7. FPD scintillating fiber detector Layers V. Šimák, D0 FNAL and CTU Prague

  8. Comparison of detector y coordinates In the spectrometers Pu and Pd Difference in reconstructed t between proton and antiproton, comparison of Monte Carlo with the data V. Šimák, D0 FNAL and CTU Prague

  9. Monte Carlo comparison Trigger efficiencies for detectors: 50% to 70% V. Šimák, D0 FNAL and CTU Prague

  10. Position of detector with respect to beam center Primary vertex reconstruction V. Šimák, D0 FNAL and CTU Prague

  11. The correlation plots y-p vs y-ap for the first detectors . The dashed lines correspond to the fiducially requirements applied V. Šimák, D0 FNAL and CTU Prague

  12. V. Šimák, D0 FNAL and CTU Prague

  13. Trigger efficiencies for first four detectors: 50% to 70% V. Šimák, D0 FNAL and CTU Prague

  14. V. Šimák, D0 FNAL and CTU Prague

  15. dn/dt raw signal selection , background , applied acceptance, applied eff. and acceptance: V. Hynek V. Šimák, D0 FNAL and CTU Prague

  16. Results A. Brandt, C. Avila Change of slope at b = 16.86 ± 0.10 (stat) ± 0.20 (sys) Fermilab-Pub-12-263-E Submitted to PRD V. Šimák, D0 FNAL and CTU Prague

  17. Comparison of result with other experiments Measurement of elastic scattering with FPD cover larger and higher that experiments: UA4, UA8, CDF V. Šimák, D0 FNAL and CTU Prague

  18. V. Šimák, D0 FNAL and CTU Prague

  19. TEVATRON and D0 detector have finished all data collection but the analyses of full set of data is continuing V. Šimák, D0 FNAL and CTU Prague

  20. Thank you V. Šimák, D0 FNAL and CTU Prague

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