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New Results from ZEUS

Explore the latest findings and research presented at the HERA Symposium in July 2011 by Aharon Levy from Tel Aviv University and DESY. The symposium showcased new results, discussions on leptoquarks, QCD findings, heavy flavor studies, and more. Discover the significance of structure functions, diffraction events, and the pursuit of precision measurements in understanding proton structure. Delve into the world of theoretical physics and advancements in gluon PDFs, alpha-S determinations, and charm mass predictions.

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New Results from ZEUS

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  1. New Results from ZEUS Aharon Levy Tel Aviv University and DESY HERA Symposium, July 2011, Aharon Levy

  2. EPS 2011 40 abstracts (27 ZEUS only) 10 talks 6 posters HERA Symposium, July 2011, Aharon Levy

  3. R.J. Cashmore et al., Phys. Rep. 22, 275 (1985) HERA Symposium, July 2011, Aharon Levy

  4. EXOTICS HERA Symposium, July 2011, Aharon Levy

  5. Leptoquarks HERA Symposium, July 2011, Aharon Levy

  6. Leptoquarks NC HERA Symposium, July 2011, Aharon Levy

  7. Leptoquarks CC HERA Symposium, July 2011, Aharon Levy

  8. Leptoquarks for =0.3 ZEUS-prel-11-008 HERA Symposium, July 2011, Aharon Levy

  9. Single top production H1 ATLAS LEP CDF ZEUS-prel-11-009 HERA Symposium, July 2011, Aharon Levy

  10. What are we still doing here? 4 years, 4 days 16 hours and 45 minutes ago HERA stopped taking data. What are we still doing here? Presenting new results? Having still many excited young people (including about 50 students) analysing HERA data?! Looked for new phenomena; found steep rise of structure function at low x; discovered diffraction in DIS – large rapidity gap events. Almost found leptoquarks… Physics is not just about finding big discoveries. We want to understand QCD and ultimately understand the structure of the proton. Need to get to highest possible precision measurements and finish to analyse all HERA data. Need to preserve HERA data for future use. HERA Symposium, July 2011, Aharon Levy

  11. QCD - S HERA Symposium, July 2011, Aharon Levy

  12. use F2 + jets as input, get S and pdfs simultaneously use pdfs as input, get S from jets Significant reduction of the correlation between the gluon pdf and S. Improve precision of the gluon pdf. Unbiased determination of S. H1-prel-11-034, ZEUS-prel-001 HERA Symposium, July 2011, Aharon Levy

  13. ZEUS-prel-11-005 nice observation of the running of S within one experiment and one process. arXiv:1107.0338 Title: Setting the Renormalization Scale in QCD: The Principle of MaximumConformality Authors: Stanley J. Brodsky and Leonardo Di Giustino HERA Symposium, July 2011, Aharon Levy

  14. QCD – Heavy Flavor HERA Symposium, July 2011, Aharon Levy

  15. Eur. Phys. J. C71, 1659 (2011) Lesson: the massive scheme works up to the highest pT measured. HERA Symposium, July 2011, Aharon Levy

  16. Heavy Flavor ~30 of F2 ~1-2 of F2 HERA Symposium, July 2011, Aharon Levy

  17. QCD - mC HERA Symposium, July 2011, Aharon Levy

  18. HERA Symposium, July 2011, Aharon Levy

  19. From charm mass scan  fix mC Fixing mCu and d better determined W and Z cross-section predictions more precise HERA Symposium, July 2011, Aharon Levy

  20. proton structure HERA Symposium, July 2011, Aharon Levy

  21. Cross sections and F2, xF3 Completed the ZEUS HERAII inclusive measurements e+p Pe=+0.32 e+p Pe=-0.36 e+p e-p ZEUS-prel-11-003 HERA Symposium, July 2011, Aharon Levy

  22. Cross sections and F2, xF3 handle on valence PDFs ZEUS-prel-11-003 HERA Symposium, July 2011, Aharon Levy

  23. First combined results in diffraction: FPS/LPS H1-prel-11-111, ZEUS-prel-11-011 HERA Symposium, July 2011, Aharon Levy

  24. ZEUS-PUB-11-03 Frankfurt – Strikman p p at LHC HERA Symposium, July 2011, Aharon Levy

  25. Look ‘inside’ the proton Ioffe: The probing photon can fluctuate into a qqbar state and back into a photon. In the proton rest frame and large Q2, the fluctuation time is: At low x, the qqbar pair travels 10-100fm before interacting with the proton; one studies the structure of the vacuum. To see ‘inside’ the proton – one has to go to high x (x > 0.1) and to high Q2. HERA Symposium, July 2011, Aharon Levy

  26. ZEUS-prel-11-004 HERA Symposium, July 2011, Aharon Levy

  27. What next? It is unlikely that the picture obtained from HERA so far will change. However, its precision will keep improving till all data is analysed. Kodak instamatic x-45 Canon EOS 16.1 MP HERA Symposium, July 2011, Aharon Levy

  28. What next? It is unlikely that the picture obtained from HERA so far will change However, its precision will keep improving till all data is analysed. Leica M9 18 MP Kodak instamatic x-45 If HERA were still running….. HERA Symposium, July 2011, Aharon Levy

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