https://doi.org/10.1140/epjc/s10052-012-2196-6
Regular Article - Theoretical Physics
Running coupling and pomeron loop effects on inclusive and diffractive DIS cross sections
1
Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501-970, Porto Alegre, RS, Brazil
2
CERN, PH-TH, 1211, Geneva 23, Switzerland
3
Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, 05315-970, São Paulo, SP, Brazil
4
Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, CEP 96010-900, Pelotas, RS, Brazil
* e-mail: joao.amaral@ufpel.edu.br
Received:
31
May
2012
Revised:
25
September
2012
Published online:
1
November
2012
Within the framework of a (1+1)-dimensional model which mimics high-energy QCD, we study the behavior of the cross sections for inclusive and diffractive deep inelastic γ ∗ h scattering cross sections. We analyze the cases of both fixed and running coupling within the mean-field approximation, in which the evolution of the scattering amplitude is described by the Balitsky–Kovchegov equation, and also through the pomeron loop equations, which include in the evolution the gluon number fluctuations. In the diffractive case, similarly to the inclusive one, suppression of the diffusive scaling, as a consequence of the inclusion of the running of the coupling, is observed.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2012
