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The QCD approach to diffractive dissociation of virtual photons

✍ Scribed by M. Wüsthoff

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
209 KB
Volume
79
Category
Article
ISSN
0920-5632

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✦ Synopsis

A short overview on diffractive deep inelastic scattering is given with emphasis on the photon wave function as unique QCD-result. The q~/-and q~g-components of the wave function are largely responsible for the shape of the ~3-spectrum. The dipole cross section which describes the scattering of the partons on the target is governed by less simple dynamics. Different models lead to different xp-distributions.

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Relative contributions of parametric X-rays and diffracted bremsstrahlung to the emission from relativistic electrons penetrating a crystal under Bragg scattering condition is studied theoretically. It is shown that the diffracted bremsstrahlung contribution may be essential under special conditions