A unified description of diffractive deep inelastic scattering with saturation

Details A unified description of diffractive deep inelastic scattering with saturation A unified description of diffractive deep inelastic scattering with saturation

2007-06-18

arxiv.org/abs/0706.2682v1

Phys.Rev.D76:094017,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 6 figures

Scientific paper

10.1103/PhysRevD.76.094017

We propose a new description of inclusive diffraction in deep inelastic scattering (DIS). The diffractive structure functions are expressed in the dipole picture and contain heavy-quark contributions. The dipole scattering amplitude, a saturation model fitted on inclusive DIS data, features a saturation scale Q_s(x) larger than 1 GeV for x=10^{-5}. The q\bar{q}g contribution to the diffractive final state is modeled in such a way that both the large-Q^2 and small-beta limits are implemented. In the regime xpom<0.01 in which saturation is expected to be relevant, we obtain a parameter-free description of the HERA data with chi^2/points=1.2.

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