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VOLUME 83 (2006) | ISSUE 5 |
PAGE 232
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Glue in the pomeron from nonlinear -factorization
N. N. Nikolaev+*, W. Schäfer+, B. G. Zakharov*, V. R. Zoller
+Institut für Kernphysik (Theorie), FZ Jülich, D-52425 Jülich, Germany *L.D. Landau Institute for Theoretical Physics RAS, 117940 Moscow, Russia Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
PACS: 11.80.La, 12.38.Bx, 13.85.-t, 13.97.-a
Abstract
We derive the nonlinear -factorization for the spectrum
of jets in high-mass diffractive deep inelastic scattering as a function of
three hard scales - the
virtuality of the photon Q2, the transverse momentum of the jet and
the saturation scale QA. In contrast to
all other hard reactions studied so far, we encounter a clash between
the two definitions of the glue in the pomeron - from the inclusive
spectrum of leading quarks and the small-β evolution of the diffractive
cross section. This clash casts a further shadow on customary applications of
the familiar collinear factorization to a pQCD analysis of diffractive
deep inelastic scattering.
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