XXXVII International Workshop on High Energy Physics “Diffraction of hadrons: Experiment, Theory, Phenomenology”

Session

Morning session

1

22 Jul 2025, 09:50

Conveners

Morning session

• Anton Godizov (NRC "Kurchatov Institute" - IHEP)

9. Introductory greeting

Vladimir Petrov (Logunov IHEP NRC KI, Protvino)

22/07/2025, 09:50

(offline)

10. Modern status of diffractive studies

Dr Mikhail Ryskin (Petersburg Nuclear Physics Institute)

22/07/2025, 10:00

(ONLINE)
The main properties of high energy diffraction are considered. Plan: 1.Definition Diffraction = elastic scattering caused by the distortion of incoming wave function V.N. Gribov -- "High energy diffraction may be related to confinement since here we deal with the amplitude of high energy particles interaction." Diffractive events is a good place to search for the new physics...

11. Unitarity effects in high-energy elastic scattering

Emerson Luna

22/07/2025, 10:45

(ONLINE)
e-Print: 2402.11385 [hep-ph]
Abstract We investigate the high-energy behavior of the elastic scattering amplitude within two distinct unitarization frameworks: the eikonal and the U-matrix schemes. Our analysis begins with a purely Pomeron-based formalism, incorporating pion-loop insertions in the Pomeron trajectory to account for the nearest singularity imposed by $t$-channel...

12. Elastic proton-proton and pion-proton scattering in holographic QCD

Akira Watanabe

22/07/2025, 12:00

(ONLINE)
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.107.014018 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.034010 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.066001 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.074010
Abstract The total and differential cross sections of elastic proton-proton and pion-proton scattering processes are...

5. Pomeron weights in QCD processes at high energy and the $S$-matrix unitarity constraint

Dr Rami Oueslati (University of Liège , Belgium)

22/07/2025, 12:45

QCD inspired models

(ONLINE)
In this talk, I explore the fundamental nature of pomeron exchanges in high-energy hadronic collisions. Although various unitarization schemes of the elastic scattering amplitude satisfy the S-matrix unitarity constraint, I will argue that rational unitarization—such as the U-matrix, is more optimum for describing QCD processes at high energies than eikonal-like schemes. I will...