Cosmological analogies in the search for new physics in high-energy
  collisions
  In this paper, analogies between multiparticle production in high-energy
collisions and the time evolution of the early universe are discussed. A common
explanation is put forward under the assumption of an unconventional early
state: a rapidly expanding universe before recombination (last scattering
surface), followed by the CMB, later evolving up to present days, versus the
formation of hidden/dark states in hadronic collisions followed by a
conventional QCD parton shower yielding final-state particles. In particular,
long-range angular correlations are considered pointing out deep connections
between the two physical cases potentially useful for the discovery of new
physics.
