Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-11-04
Nucl.Phys.Proc.Suppl. 71 (1999) 392-399
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, latex file, no figures, contributions to the proceedings of the ISMD97
Scientific paper
10.1016/S0920-5632(98)00371-5
CDF has recently measured a large number of double parton scatterings. The observed value of $\sigma_{eff}$, the non perturbative parameter which characterizes the process, is considerably smaller as compared with the naive expectation. The small value of $\sigma_{eff}$ is likely to be an indication of the importance of the two-body parton correlations in the many-body parton distributions of the proton.
Calucci Giorgio
Treleani Daniele
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