Hard diffractive scattering from soft color screening effect
by
Roman Pasechnik(Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden)
→
Europe/Brussels
Large seminar room : 1G-003 (IIHE(ULB-VUB))
Large seminar room : 1G-003
IIHE(ULB-VUB)
Description
We present a simple QCD-based model where the soft
gluon rescattering between final state partons in deep inelastic
scattering leads to events with large rapidity gaps and a leading
proton. In the framework of this model the amplitude of the soft
gluon exchanges is calculated in the eikonal approximation to all
orders in perturbation theory. Both large and small invariant mass
MX limits are considered. The model successfully describes the
precise HERA data on the diffractive deep inelastic cross section in
the whole available kinematical range and give new insights on the
density of gluons at very small momentum fractions in the proton