Hadronic Diffraction: Where do we Stand?

Abstract

Experimental results on hadronic soft and hard diffractive processes are reviewed with emphasis on aspects of the data that point to the underlying QCD mechanism for diffraction. Diffractive differential cross sections are shown to be factorized into two terms, one representing the total cross section at the reduced energy, corresponding to the rapidity region(s) in which there is particle production, and another interpreted as the probability of formation of the rapidity gap(s) characterizing diffraction. By (re)normalizing the term of gap formation probability to unity, cross sections for single, central, and multiple rapidity gap soft diffraction, as well as structure functions for hard diffraction processes, are obtained from the underlying inclusive parton distribution functions. A unified partonic picture emerges, in which diffraction appears to be mediated by the exchange of low-x partons subject to color constraints.

arXiv comment17 pages, Presented at Les Rencontres de Physique de la Valle d'Aoste, La Thuile, Aosta Valley, Italy, February 29 - March 6, 2004

References in corpus (2)

• Factorization in hard diffraction
• Diffraction: Results and Conclusions

Cited by in corpus (17)

• Measurement of the inelastic proton-proton cross section at $\sqrt{s}=$ 13 TeV
• Measurement of diffraction dissociation cross sections in pp collisions at sqrt(s) = 7 TeV
• Measurement of charged particle spectra in minimum-bias events from proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Fluctuations, Saturation, and Diffractive Excitation in High Energy Collisions
• Central jet production as a probe of the perturbative formalism for exclusive diffraction
• On the universality of cross sections of hadron-hadron(nuclei) collisions at superhigh energies
• Pomeron intercept and slope: the QCD connection
• Inclusive and exclusive diffraction: overview of the experimental presentations at Diffraction2004
• Summary of the Workshop on Multi-Parton Interactions (MPI@LHC 2012)
• Multigap Diffraction at LHC
• Regge models of proton diffractive dissociation based on factorization and structure functions
• RENORM tensor-Pomeron diffractive predictions
• Phenomenology of single and double diffraction dissociation
• Exclusive Central Production and Diffractive W/Z Results from CDF II
• CMS results on soft diffraction
• Diffractive and Exclusive (Higgs?) Production from CDF to LHC
• Summary of the "Diffraction & Vector Mesons" working group at DIS05