  We discuss the global structure of pp events at LHC with hard processes
(particle production in two-parton collisions) on the basis of the transverse
spatial characteristics of the partonic initial state. Studies of hard
exclusive processes in ep scattering have shown that the transverse area
occupied by partons with x >= 10^{-2} is much smaller than the size of the
nucleon as it appears in generic inelastic pp collisions at high energies
("two-scale picture"). We show that this is consistent with the observation
that the elastic pp amplitude at the Tevatron energy is close to the black body
limit at small impact parameters. Our picture implies that inclusive heavy
particle production (Higgs, SUSY) happens only in central pp collisions. At LHC
energies, the final state characteristics of such events are strongly
influenced by the approach to the black body limit, and thus may differ
substantially from what one expects based on the extrapolation of Tevatron
results. Our two-scale picture also allows us to analyze several types of hard
diffractive processes observable at LHC: i) Diffractive proton dissociation
into three jets, which probes small-size configurations in the proton wave
function; ii) exclusive diffractive Higgs production, in which we estimate the
rapidity gap survival probability; iii) inclusive diffractive processes.
