2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43884We present the calculation of gamma gamma -> 2e+e- process cross section. The construction are perfomed using both helicity amplitude method and method of precision covariant calculation. The magnitude of cross section is obtained by the Monte-Carlo method of numerical integration. Different energies, polarization states and kinematics cuts are considered.7 pages, 4 figures, 1 tableHigh Energy Physics - Phenomenologytext