Analysis of double diffraction dissociation in nucleon-nucleon collisions at the CERN ISR

Diffractive vector meson production

“…in good agreement with the experimental data from in the CERN ISR and FNAL experiments [119][120][121][122][123]. The SD into high-mass (HM) continuum, pp → pY (HM), corresponds to the complete breakup of the target proton and the reaction can be viewed as elastic scattering of the beam proton on one of the constituents of the target.…”

“…the large-t extension of eq. (123). The double-flip and non-flip amplitudes have similar t-dependence and are suppressed.…”

A survey of backward proton and pion production in p + C interactions at beam momenta from 1 to 400 GeV/c

“…Their final states have been shown to be governed by N * resonances [36] which may be excited by Pomeron exchange. Moreover, the p+π + combination of the p+π + +π − final states has been shown to be dominated by ∆ ++ [37]. This is an indirect source of ∆ resonances as a decay product of N * states which have large decay branching fractions into ∆+π and ∆+ρ.…”

Phenomenology of diffractive DIS

“…Here one finds B d = B 3IP = ∆B pp + ∆B int ∼ 1 2 B el ≈6 GeV −2 . In the double high-mass diffraction hp → XY , when M X,Y ≫ m N , one is left with B d ∼ ∆B int ∼1.5-2 GeV −2 (for the especially illuminating data on double diffraction see [40]). The Regge shrinkage of the diffraction, i.e., the Regge rise of B el with energy, was seen in all elastic scattering processes; there is as yet no clear evidence for the shrinkage of the diffraction cone for diffraction dissociation.…”