ABSTRACT
The asymptotical freedom property simplifies calculations of many processes. In order to understand it we, for example, consider a quark being contained into a proton. In a space the effective color quark charge is distributed in the form of a cloud (Fig. 7.1). We shall
e−
γ∗
e−
γ∗
e− e−
short−wave excitations
proton quark
long−wave excitations
FIGURE 7.1
Probing the proton structure with the help of the e−p→ e−p elastic scattering (for the sake of convenience we direct the time axis upwards).
