Multi-dimensional hadron structure through the lens of gluon Wigner distribution
(2024) In Physics Reports 1084. p.3-57- Abstract
In this review, we present the current status of phenomenological research on constraining the multi-dimensional proton (and nucleus) structure at high energies through studies of the so-called gluon Wigner distributions. We provide a brief pedagogical introduction into the corresponding theoretical definitions and modelling of exclusive and diffractive scattering observables in terms of the Wigner distribution. Also, we present a detailed outlook into the existing and planned experimental measurements that attempt to constrain the Wigner distribution. We briefly overview possible interconnections between various manifestations of the gluon Wigner distribution emerging, for instance, in azimuthal-angle correlations in (semi)exclusive... (More)
In this review, we present the current status of phenomenological research on constraining the multi-dimensional proton (and nucleus) structure at high energies through studies of the so-called gluon Wigner distributions. We provide a brief pedagogical introduction into the corresponding theoretical definitions and modelling of exclusive and diffractive scattering observables in terms of the Wigner distribution. Also, we present a detailed outlook into the existing and planned experimental measurements that attempt to constrain the Wigner distribution. We briefly overview possible interconnections between various manifestations of the gluon Wigner distribution emerging, for instance, in azimuthal-angle correlations in (semi)exclusive reactions and elliptic flow measurements in inclusive processes. We also summarise the current knowledge on the most important processes that would potentially enable one to constrain the elliptic gluon density in the proton and to separate it from the genuine effect of hydrodynamic evolution in the flow measurements.
(Less)
- author
- Pasechnik, Roman LU and Taševský, Marek
- organization
- publishing date
- 2024-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- (Semi)exclusive process, Elliptic flow, Gluon Wigner function, Hadron structure, Two-particle correlations
- in
- Physics Reports
- volume
- 1084
- pages
- 55 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85197628918
- ISSN
- 0370-1573
- DOI
- 10.1016/j.physrep.2024.06.004
- language
- English
- LU publication?
- yes
- id
- 3221b965-2d30-4934-9d0a-a2be1a95bdbf
- date added to LUP
- 2024-09-06 13:26:22
- date last changed
- 2025-04-04 14:02:41
@article{3221b965-2d30-4934-9d0a-a2be1a95bdbf,
abstract = {{<p>In this review, we present the current status of phenomenological research on constraining the multi-dimensional proton (and nucleus) structure at high energies through studies of the so-called gluon Wigner distributions. We provide a brief pedagogical introduction into the corresponding theoretical definitions and modelling of exclusive and diffractive scattering observables in terms of the Wigner distribution. Also, we present a detailed outlook into the existing and planned experimental measurements that attempt to constrain the Wigner distribution. We briefly overview possible interconnections between various manifestations of the gluon Wigner distribution emerging, for instance, in azimuthal-angle correlations in (semi)exclusive reactions and elliptic flow measurements in inclusive processes. We also summarise the current knowledge on the most important processes that would potentially enable one to constrain the elliptic gluon density in the proton and to separate it from the genuine effect of hydrodynamic evolution in the flow measurements.</p>}},
author = {{Pasechnik, Roman and Taševský, Marek}},
issn = {{0370-1573}},
keywords = {{(Semi)exclusive process; Elliptic flow; Gluon Wigner function; Hadron structure; Two-particle correlations}},
language = {{eng}},
pages = {{3--57}},
publisher = {{Elsevier}},
series = {{Physics Reports}},
title = {{Multi-dimensional hadron structure through the lens of gluon Wigner distribution}},
url = {{http://dx.doi.org/10.1016/j.physrep.2024.06.004}},
doi = {{10.1016/j.physrep.2024.06.004}},
volume = {{1084}},
year = {{2024}},
}