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

Hagiwara, Yoshikazu ; Hatta, Yoshitaka ; Pasechnik, Roman LU and Zhou, Jian (2020) In European Physical Journal C 80(5).
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... (More)

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.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
80
issue
5
article number
427
publisher
Springer
external identifiers
  • scopus:85084835606
ISSN
1434-6044
DOI
10.1140/epjc/s10052-020-8007-6
language
English
LU publication?
yes
id
f6987b2c-a4b9-4380-ac20-8e729ca69521
date added to LUP
2020-06-17 14:36:33
date last changed
2024-03-20 11:04:39
@article{f6987b2c-a4b9-4380-ac20-8e729ca69521,
  abstract     = {{<p>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 ϕ<sub>1 , 2 , 3 , 4 , 5</sub> 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 ϕ<sub>2</sub>, 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.</p>}},
  author       = {{Hagiwara, Yoshikazu and Hatta, Yoshitaka and Pasechnik, Roman and Zhou, Jian}},
  issn         = {{1434-6044}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{5}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C}},
  title        = {{Spin-dependent Pomeron and Odderon in elastic proton–proton scattering}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-020-8007-6}},
  doi          = {{10.1140/epjc/s10052-020-8007-6}},
  volume       = {{80}},
  year         = {{2020}},
}