M. Tentyukov

Low-x scaling in γ∗p total cross sections☆

We show that the experimental data for the total virtual-photon proton cross section, \sigma_{\gamma^*p} (W^2, Q^2), for x_{bj} \lsim 0.1 lie on a universal curve, when plotted against \eta = (Q^2 + m^2_0)/ \Lambda^2(W^2), where \Lambda^2 (W^2) = C_1 (W^2+W^2_0)^{C_2} is determined by the parameters m^2_0, C_1, C_2 and W^2_0. The observed scaling law follows from the generalized-vector-dominance/color-dipole picture of low-x deep inelastic scattering.Abstract We show that the experimental data for the total virtual-photon proton cross section, σ γ ∗ p (W 2 ,Q 2 ) , for xbj≲0.1 lie on a universal curve, when plotted against η=(Q2+m20)/Λ2(W2), where Λ2(W2)=C1(W2+W20)C2 is determined by the parameters C1,C2 and W20. The observed scaling law follows from the generalized-vector-dominance/colour-dipole picture (GVD/CDP) of low-x deep inelastic scattering.

The generalised vector dominance/colour-dipole picture of deep-inelastic scattering at low x

Abstract. We give a detailed account of the recently formulated generalised vector dominance/colour-dipole picture (GVD/CDP) of deep-inelastic scattering at low

Scaling in gamma* p total cross-sections, saturation and the gluon density

x\cong Q^2/W^2

Non factorizable O(ααs) corrections to the process

, including photoproduction. The approach, based on

Non factorizable O(ααs) corrections to the process Z→bb̄

\gamma^* (q \bar q)

Nonfactorizable O(alpha alpha(s)) corrections to the process Z ---> b anti-b

transitions,

Diffraction and sigma_{gamma* p}

q \bar q

Diffraction and sigma(gamma*rho)

propagation and diffractive

Low- x scaling in γ ∗p total cross sections ☆ ☆ Supported by the BMBF, Bonn, Germany, Contract 05 HT9PBA2.

(q \bar q)p

Low-x scaling in Deep Inelastic Scattering

scattering via the generic structure of the two-gluon exchange, provides a unique and quantitatively successful theory for the