Universe, Vol. 10, Pages 208: Dip-Bump Structure in Proton’s Single Diffractive Dissociation at the Large Hadron Collider

Universe, Vol. 10, Pages 208: Dip-Bump Structure in Proton’s Single Diffractive Dissociation at the Large Hadron Collider

Universe doi: 10.3390/universe10050208

Authors: László Jenkovszky Rainer Schicker István Szanyi

By extending the dipole Pomeron (DP) model, successful in describing elastic nucleon–nucleon scattering, to proton single diffractive dissociation (SD), we predict a dip-bump structure in the squared four-momentum transfer (t) distribution of proton’s SD. Structures in the t distribution of single diffractive dissociation are predicted around t=−4 GeV2 at LHC energies in the range of 3 GeV2≲|t|≲ 7 GeV2. Apart from the dependence on s (total energy squared) and t (squared momentum transfer), we predict also a dependence on missing masses. We include the minimum set of Regge trajectories, namely the Pomeron and the Odderon, indispensable at the LHC. Further generalization, e.g., by the inclusion of non-leading Regge trajectories, is straightforward. The present model contains two types of Regge trajectories: those connected with t−channel exchanges (the Pomeron, the Odderon, and non-leading (secondary) reggeons) appearing at small and moderate −t, where they are real and nearly linear, as well as direct-channel trajectories α(M2) related to missing masses. In this paper, we concentrate on structures in t neglecting (for the time being) resonances in M2.