Speaker
Description
A method of solving of QED evolution equations for parton distibution functons
in the leading and next-to-leading orders is discussed. This method is a reduction
to QED of the method of iterative solution of DGLAP equations in QCD. Spacelike parton distributon
functions (PDFs) of positron in electron are calculated to the third order.
We consider process-independent PDFs $D_{e \bar{e}}$ which describe the probability
density of finding massless partons (positron) inside electron.
The results can be used to calculate cross-sections of high-energy
processes with electrons and positrons, such as electron-positron annihilation
and scattering. These results are important for precise calculation of radiative
corrections in QED and accurate predictions of high-energy processes on future colliders.
