Gravitation interactions at high energies and Reggeon scheme

A parton-Reggeon model that, for basic partons, employs gravitons of virtuality on the order of the Planck scale is proposed to describe inelastic interactions at trans-Planckian energies. A graviton analog of the Pomeron with an intercept of α(0)=3 is introduced on the basis of the structure of the gravitational field of a fast particle. Its unitarization leads to inelastic cross sections growing in proportion to s and corresponds to the pattern of a collision between black disks of radius about E _i ^1/2 . The inclusive spectra of hard gravitions whose behavior is determined by the size of the region of overlap of colliding black disks at various impact parameters and various energies is found. The graviton system formed in this way proves to be unstable against the gravitational attraction of particles having close momenta. This leads to the emergence of a multiperipheral chain of black holes at the stage of divergence—the structure of such a chain depends greatly on the impact parameters of a collision.