New feature of low p_T charm quark hadronization in pp collisions at √(s) = 7 TeV

Treating the light-flavor constituent quarks and antiquarks whose momentum information is extracted from the data of soft light-flavor hadrons in pp collisions at √(s) = 7 TeV as the underlying source of chromatically neutralizing the charm quarks of low transverse momenta (p_T), we show that the experimental data of p_T spectra of single-charm hadrons D^0,+, D^*+ D_s⁺, Λ_c⁺ and Ξ_c⁰ at mid-rapidity in the low p_T range (2 T T charm quark hadronization, in contrast to the traditional fragmentation mechanism, in pp collisions at LHC energies. This is also another support for the exhibition of the soft constituent quark degrees of freedom for the small parton system created in pp collisions at LHC energies. (orig.)