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Diffractive cross sections at HERA and diffractive PDFs

โœ Scribed by Laurent Schoeffel


Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
610 KB
Volume
191
Category
Article
ISSN
0920-5632

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Cross sections for events of the type ep --+ eXY, where the systems X and Y are separated by a large rapidity gap and X contains two jets, are presented for both deep inelastic scattering and photoproduction, measured using data from the H1 experiment at HERA. The corrected cross sections are descri

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Recent high precision measurements of deep inelastic diffractive scattering at HERA are presented in an increased region of phase space. Current models for diffractive photon dissociation are compared to the data. \*Postdoctoral fellow of the Fund for Scientific Research -Flanders (Belgium)

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Diffractive neutral current deep inelastic scattering processes have been studied at HERA with the H1 and ZEUS experiments using several experimental techniques. The latest results, coming from the analysis of 1994 data, are presented and discussed here.

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The diffractive cross section do',r,p\_.,xy/dMx in the mass range 3.0 < Mx < 12.2 GeV and My < 6.0 GeV has been measured at low Q2 0.22 < Q2 < 0.70 GeV ~, by detecting the scattered electron with the ZEUS Beam Pipe Calorimeter. From the W dependence of the diffractive cross section, the effective in

Energy dependence of diffractive product
โœ E. Gotsman; E. Levin; M. Lublinsky; U. Maor; K. Tuchin ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 501 KB

Intrigued by the unexpected recent results from HERA, that the ratio ฯƒ diff /ฯƒ tot is only weakly dependent on energy, we have attempted to reproduce this result within the framework of perturbative QCD. To this end we generalize the Kovchegov-McLerran formula for the ratio using Glauber-Mueller app