Spin-dependent Pomeron and Odderon in elastic proton–proton scattering

Research output: Contribution to journalArticle

Abstract

We introduce a new model of near-forward elastic proton–(anti)proton scattering at high energy based on the modern formulation of Pomeron and Odderon in terms of Wilson lines and generalized transverse momentum dependent distributions. We compute the helicity-dependent elastic amplitudes ϕ1 , 2 , 3 , 4 , 5 in this model and study their energy dependence from the nonlinear small-x evolution equations. While both Pomeron and Odderon contribute to helicity-flip processes in general, in the forward limit t= 0 only the double helicity-flip amplitude ϕ2, dominated by the spin-dependent Odderon, survives. This may affect the extraction of the ρ parameter as well as the total cross section in the LHC energy domain and beyond.

Details

Authors
Organisations
External organisations
  • Shandong University
  • Brookhaven National Laboratory
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number427
JournalEuropean Physical Journal C
Volume80
Issue number5
Publication statusPublished - 2020 May 15
Publication categoryResearch
Peer-reviewedYes