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Isolated photon production in the color dipole picture

Lima, Yuri N. ; Gonçalves, Victor P.B. ; Pasechnik, Roman LU and Šumbera, Michal (2021) 15th International Workshop on Hadron Physics, XVHadronPhysics 2021 In Proceedings of Science 408.
Abstract

A phenomenological study of the isolated photon production in high energy pp and pA collisions at RHIC and LHC energies is performed. Using the color dipole formalism, we investigate the impact of the saturation effects on the production cross sections considering three different phenomenological models for the universal dipole cross section. Predictions for the rapidity dependence of the ratio of pA to pp cross sections are also presented. Moreover, we present our predictions for the correlation function in azimuthal angle Δφ between the photon and a forward pion for different energies and photon rapidities. Our results demonstrate that the presence of saturation effects implies a double-peak structure in the correlation function... (More)

A phenomenological study of the isolated photon production in high energy pp and pA collisions at RHIC and LHC energies is performed. Using the color dipole formalism, we investigate the impact of the saturation effects on the production cross sections considering three different phenomenological models for the universal dipole cross section. Predictions for the rapidity dependence of the ratio of pA to pp cross sections are also presented. Moreover, we present our predictions for the correlation function in azimuthal angle Δφ between the photon and a forward pion for different energies and photon rapidities. Our results demonstrate that the presence of saturation effects implies a double-peak structure in the correlation function around Δφ≃ π when the isolated photon and the pion are produced at forward rapidities.

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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of Science
series title
Proceedings of Science
volume
408
conference name
15th International Workshop on Hadron Physics, XVHadronPhysics 2021
conference location
Virtual, Sao Jose dos Campos, Brazil
conference dates
2021-09-13 - 2021-09-17
external identifiers
  • scopus:85137608733
ISSN
1824-8039
language
English
LU publication?
yes
id
992ee54e-be4c-4554-b659-16ea9ffb3e91
date added to LUP
2022-12-05 12:39:34
date last changed
2024-03-21 15:23:16
@inproceedings{992ee54e-be4c-4554-b659-16ea9ffb3e91,
  abstract     = {{<p>A phenomenological study of the isolated photon production in high energy pp and pA collisions at RHIC and LHC energies is performed. Using the color dipole formalism, we investigate the impact of the saturation effects on the production cross sections considering three different phenomenological models for the universal dipole cross section. Predictions for the rapidity dependence of the ratio of pA to pp cross sections are also presented. Moreover, we present our predictions for the correlation function in azimuthal angle Δφ between the photon and a forward pion for different energies and photon rapidities. Our results demonstrate that the presence of saturation effects implies a double-peak structure in the correlation function around Δφ≃ π when the isolated photon and the pion are produced at forward rapidities.</p>}},
  author       = {{Lima, Yuri N. and Gonçalves, Victor P.B. and Pasechnik, Roman and Šumbera, Michal}},
  booktitle    = {{Proceedings of Science}},
  issn         = {{1824-8039}},
  language     = {{eng}},
  month        = {{08}},
  series       = {{Proceedings of Science}},
  title        = {{Isolated photon production in the color dipole picture}},
  volume       = {{408}},
  year         = {{2021}},
}