4 papers
Aspects of the Heavy-Quark Photoproduction in the Semihard Approach
C. Brenner Mariotto, M. B. Gay Ducati, M. V. T. Machado
In this contribution we report on the calculations of heavy-quark photoproduction using the semihard approach, emphasizing the results obtained with the phenomenological saturation…
Improved mapping of ccbar onto charmonium states
C. Brenner Mariotto, M. B. Gay Ducati, G. Ingelman
We discuss the relative rates of different charmonium states and introduce an improved model for mapping the continuous ccbar mass spectrum on the physical charmonium resonances.
Soft and hard QCD in charmonium production
C. Brenner Mariotto, M. B. Gay Ducati, G. Ingelman
Hard and soft QCD dynamics are both important in charmonium hadroproduction, as presented here through a next-to-leading order QCD matrix element calculation combined with the colo…
Hard and soft QCD in charmonium production
C. B. Mariotto, M. B. Gay Ducati, G. Ingelman
We show that both hard perturbative and soft non-perturbative QCD effects are important in hadroproduction of charmonium. Observed and distributions of J/psi in fix…