Eur. Phys. J. C (2017) 77: 600
https://doi.org/10.1140/epjc/s10052-017-5173-2

Regular Article - Theoretical Physics

Photon and Pomeron-induced Production of Dijets in pp, pA and AA Collisions

¹ Faculdade de Ciências Exatas e Tecnologias, Universidade Federal da Grande Dourados (UFGD), Caixa Postal 364, Dourados, MS, CEP 79804-970, Brazil
² Instituto de Física e Matemática, Universidade Federal de Pelotas (UFPel), Caixa Postal 354, Pelotas, RS, CEP 96010-900, Brazil
³ Instituto de Física, Universidade Federal do Rio de Janeiro (UFRJ), Caixa Postal 68528, Rio de Janeiro, RJ, CEP 21941-972, Brazil
⁴ Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, RJ, CEP 22290-180, Brazil

^* e-mail: victor.goncalves@thep.lu.se

Received: 26 June 2017
Accepted: 24 August 2017
Published online: 11 September 2017

Abstract

In this paper we present a detailed comparison of the dijet production by photon–photon, photon–pomeron and pomeron–pomeron interactions in pp, pA and collisions at the LHC energy. The transverse momentum, pseudo-rapidity and angular dependencies of the cross sections are calculated at LHC energy using the Forward Physics Monte Carlo (FPMC), which allows one to obtain realistic predictions for the dijet production with two leading intact hadrons. We see that the channel is dominant at forward rapidities in pp collisions and in the full kinematical range in the nuclear collisions of heavy nuclei. Our results indicate that the analysis of dijet production at the LHC can be useful to test the resolved pomeron model as well as to constrain the magnitude of the absorption effects.