Hadronic Production of Doubly Charmed Baryons via Charm Excitation in Proton

The production of baryons containing two charmed quarks (Ξ∗cc or Ξcc) in hadronic interactions at high energies and large transverse momenta is considered. It is supposed, that Ξcc-baryon is formed during a non-perturbative fragmentation of the (cc)diquark, which was produced in the hard process of c-quark scattering from the colliding protons: c + c → (cc) + g. It is shown that such mechanism enhances the expected doubly charmed baryon production cross section on Tevatron and LHC colliders approximately 2 times in contrast to predictions, obtained in the model of gluon gluon production of (cc)-diquarks in the leading order of perturbative QCD.