Abstract
We apply the phenomenological Reggeon field theory framework to investigate rapidity gap survival (RGS) probability for diffractive dijet production in proton–proton collisions. In particular, we study in some detail rapidity gap suppression due to elastic rescatterings of intermediate partons in the underlying parton cascades, described by enhanced (Pomeron–Pomeron interaction) diagrams. We demonstrate that such contributions play a subdominant role, compared to the usual, so-called “eikonal”, rapidity gap suppression due to elastic rescatterings of constituent partons of the colliding protons. On the other hand, the overall RGS factor proves to be sensitive to color fluctuations in the proton. Hence, experimental data on diffractive dijet production can be used to constrain the respective model approaches.
Highlights
An important direction in experimental studies of high energy hadronic collisions is related to diffractive hadron production, in particular, to production of high transverse momentum pt particles in events characterized by large rapidity gaps (RGs) not covered by secondary hadrons
Let us start with the investigation of the energy dependence of the dijet production cross section and of the respective rapidity gap survival probability for single diffractiverepsruolttosnf–oprro√tosn-dceoplelinsdioennsc.eInofFσigp2.pje7t−(SleDf(tf)a,ctw) ecaclocmulpataerde according to Eq (8), based on the factorization assumption, to the one of σ
We applied the phenomenological Reggeon field theory framework for calculations of the rapidity gap survival probability for diffractive dijet production in proton–proton collisions, investigating in some detail various absorptive effects contributing to the RG suppression
Summary
An important direction in experimental studies of high energy hadronic collisions is related to diffractive hadron production, in particular, to production of high transverse momentum pt particles in events characterized by large rapidity gaps (RGs) not covered by secondary hadrons. The problem has been widely addressed in literature and numerous estimations of the RGS probability for various hard diffraction reactions have been obtained [4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22] Most of those studies have been devoted to the dominant, socalled “eikonal”, mechanism of the RG suppression, related to elastic rescatterings between constituent partons of the colliding protons, addressing, in particular, the energy dependence of the RGS probability [5,6] and the role of the inelastic diffraction treatment in respective models1 [6,7,11,14].
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