https://doi.org/10.1140/epjc/s10052-020-8007-6
Regular Article - Theoretical Physics
Spin-dependent Pomeron and Odderon in elastic proton–proton scattering
1
Key Laboratory of Particle Physics and Particle Irradiation (MOE), Institute of Frontier and Interdisciplinary Science, Shandong University (QingDao), Shandong, 266237, China
2
Physics Department, Brookhaven National Laboratory, Upton, NY, 11973, USA
3
Department of Astronomy and Theoretical Physics, Lund University, 221 00, Lund, Sweden
* e-mail: yhatta@bnl.gov
Received:
11
March
2020
Accepted:
2
May
2020
Published online:
15
May
2020
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 
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 
only the double helicity-flip amplitude 
, dominated by the spin-dependent Odderon, survives. This may affect the extraction of the 
parameter as well as the total cross section in the LHC energy domain and beyond.
© The Author(s), 2020
