0588119 - FZÚ 2025 RIV NL eng J - Journal Article
Pasechnik, Roman - Taševský, Marek
Multi-dimensional hadron structure through the lens of gluon Wigner distribution.
Physics Reports-Review Section of Physics Letters. Roč. 1084, Sept (2024), s. 3-57. ISSN 0370-1573. E-ISSN 1873-6270
R&D Projects: GA MŠMT(CZ) EF18_053/0016627; GA MŠMT(CZ) LTT17018
Institutional support: RVO:68378271
Keywords : hadron structure * gluon Wigner function * (semi)exclusive process * two-particle correlations * elliptic flow
OECD category: Particles and field physics
Impact factor: 23.9, year: 2023 ; AIS: 8.614, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1016/j.physrep.2024.06.004

IWe review the current status of phenomenological research on constraining the multi-dimensional proton (and nucleus) structure at high energies through studies of the 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 an outlook into the existing and planned measurements that attempt to constrain the Wigner distribution. We 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 potentially enabling 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.
Permanent Link: https://hdl.handle.net/11104/0355147