The first three pomerons...

Abstract

A model of a three Pomeron contribution to high energy elastic pp andpp scattering is proposed. The data are well described for all momenta (0.01 ≤ |t| ≤ 14. GeV 2 ) and energies (8.The model predicts the appearance of two dips in the differential cross-section which will be measured at LHC. The parameters of the Pomeron trajectories are: α(0) P1 = 1.058, α ′ (0) P1 = 0.560 (GeV −2 ); α(0) P2 = 1.167, α ′ (0) P2 = 0.273 (GeV −2 ); α(0) P3 = 1.203, α ′ (0) P3 = 0.094 (GeV −2 ).

LHC as π p and π π collider

“…We estimate only absorption in the initial state, since it gives the main contribution. For this task we use our model with 3 Pomeron trajectories [29]: …”

“…In the calculations of such absorptive effects we use Regge-eikonal approach [29]. In the first part of the paper we present our calculations for differential cross-sections, while in the last section the Monte-Carlo simulation and experimental possibilities are considered using the CMS ZDC [30,31] detector as an example.…”

Gravi-Reggeons and trans-Planckian scattering in models with one extra dimension

“…We will use a fit from Ref. [16] for the radius r and slope of the hard Pomeron (remember that µ ∼ M s ∼ 1 TeV): Figure 1: The gravitational inelastic neutrino-proton cross-section as a function of the neutrino energy E ν for three different values of the (reduced) fundamental scaleM 5 and string scale M s , which are assumed to be the same. For comparison, the SM charged current neutrino-proton cross section is presented (dotted curve).…”

Extrapolation of proton-proton cross section to cosmic ray energies using geometrical model

“…The decrease of both slopes and the increase of both normalisation factors when the collision energy rise, confirm that the proton becoms Blacker, Edgier and Larger according to postulated BEL behaviour. [29] 108.6 ± 1.2 Bourelly et al [30] 103.63 ± 1.0 Petrov et al [31] 106.73 Block, Halzen et al [32] 107.30 Islam et al [33] 110.00 Jenkovszky et al [34] 111.00 Block [35] 133.40 ± 1.6 AKENO [28] 101±16 104 ± 26 124 ± 34 Fly's Eye [26] 120 ± 15 AUGER [18] 133.20 ± 13 Telescope Array [22] 170.00 ± 50 LHC TOTEM [36] 102.9 LHC ATLAS [37] 96 …”