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This document compiles materials presented during the Small x and Diffraction conference held at Fermilab from March 28-30, 2007, by Bernd Löhr from DESY. It includes discussions on the ZEUS MX analysis and showcases reliable measurement techniques. The report also features comparisons of LRG data from ZEUS and H1, highlights the behavior of diffractive cross-sections, and presents various fits such as Regge fits. These contributions shed light on the dynamics of high-energy particle interactions and their implications for particle physics research.

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  1. Additional Material

  2. Page A1 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  3. Page A2 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  4. Page A3 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  5. Page A4 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  6. The ZEUS MX-Analysis II Demonstration that MX can be measured reliably Nondiffractive contribution from DJANGOH has logarithmic slope Nondiffractive contribution from REGGEON exchange has logarithmic slope Page A5 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  7. Comparison of Results from ZEUS LRG 00 with H1 LRG xIP = 0.003 xIP = 0.01 ZEUS LRG 00 (prel.), H1 LRG ZEUS LRG 00 (prel.), H1 LRG The ZEUS LRG 00 data are normalized to the H1 LRG data Page A6 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  8. ZEUS points transported to H1 binning with BEKW-fit, only if correction <1.3 xIP Page A7 Bernd Löhr Monday Meeting 12.3.2007

  9. Bernd Löhr Monday Meeting 12.3.2007 Page A8

  10. Regge-Fit to LRG compared with MX-Data The fit curve is the Pomeron contribution from the Regge-Fit to the LRG data Page A9 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  11. Regge-Fit to LRG Data Page A10 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  12. MX – dependence of the diffractive cross-section at constant W Mx 89-99 Q2ds/dMX shows a rapid variation with Q2 at low MX . Q2ds/dMX tends towardsa common value at higher MX . Mx 00 This kind of scaling behaviour is reached only at higher MX for higher Q2 when MX2 becomes of the order of Q2 . Page A11 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

  13. Comparison of MX – Results from H1 and ZEUS H1 MX data 2006 ZEUS MX I data 2005 The ZEUS data have been renormalized by a factor 0.86 so that they correspond to MN=1.6 GeV as for the H1 data Page A12 Small x and Diffraction , 28-30 March 2007, Fermilab Bernd Löhr, DESY

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