arXiv subjects

H. Navelet

Publications and source records attributed to H. Navelet.

20 records · Page 2Linked to original sources

arXiv1995

Deep-Inelastic Onium Scattering

Using the colour dipole approach of the QCD perturbative (BFKL) Pomeron exchange in onium-onium scattering, we compute the cross section for small but hierarchically different onium sizes. A specific term dependent on the size-ratio is generated. In deep inelastic onium scattering it appears as a scaling violation contribution to the quark structure function near the BFKL singularity. We find that the extension of the formalism for deep inelastic onium scattering to the proton structure function provides a remarkably good 3-parameter fit to HERA data at small x with a simple physical interpretation in terms of the dipole formulation.

hep-ph↗

arXiv1994

On the Singular Behaviour of Structure Functions at Low X

We discuss the phenomenological extraction of the leading $ j$-plane singularity from singlet structure functions $ F_s $ measured at small $ x. $ Using a saddle-point method we show that $ {\rm d ln} F_s /{\rm d ln}{1 \over x} $ is a suitable observable for this purpose in the region $x \le 10^{-2}.$ As an application, we confront and distinguish in a model-independent way structure function parametrizations coming from two different QCD evolution equations, namely the Lipatov (or BFKL) equation and the Gribov-Lipatov -Altarelli-Parisi (or GLAP) equation. Recent results at HERA are discussed in this framework.

hep-ph↗