On a two-pomeron description of the F2 structure function
Institute of Electron Physics, National Academy of Sciences of Ukraine, Universitetska 21, UA-88016, Uzhgorod, Ukraine
2 Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, CEP 96010-090, Pelotas, RS, Brazil
3 High Energy Physics Phenomenology Group, GFPAE, IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil
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We perform a global fit to the inclusive structure function considering a QCD-inspired model based on the summation of gluon ladders describing the ep scattering. In line with a two-pomeron approach, the structure function F2 has a hard piece given by the model and the remaining soft contributions: the soft pomeron and non-singlet content. We have investigated several choices for the soft pomeron and its implication in the data description. In particular, we carefully estimated the relative role of the hard and the soft contributions in a large span of x and Q2.
© Società Italiana di Fisica and Springer-Verlag, 2003