Hadronic Production of Doubly Charmed Baryons via Charm Exitation in Proton
Abstract
The production of baryons containing two charmed quarks Xicc in hadronic interactions at high energies and large transverse momenta is considered. It is supposed, that Xicc-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.
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