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The logarithmic slope in diffractive DIS

✍ Scribed by M.B. Gay Ducati; V.P. Gonçalves; M.V.T. Machado

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
228 KB
Volume
697
Category
Article
ISSN
0375-9474

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✦ Synopsis

The logarithmic slope of diffractive structure function is a potential observable to separate the hard and soft contributions in diffraction, allowing to disentangle the QCD dynamics at small-x region. In this paper we extend our previous analyzes and calculate the diffractive logarithmic slope for three current approaches in the literature: (i) the Bartels-Wusthoff model, based on perturbative QCD, (ii) the CKMT model, based on Regge theory and (iii) the Golec-Biernat-Wusthoff model which assumes that the saturation phenomena is present in the HERA kinematic region. We analyze the transition region of small to large momentum transfer and verify that future experimental results on the diffractive logarithmic slope could discriminate between these approaches.

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