Pomeron evolution, entanglement entropy and Abramovskii-Gribov-Kancheli cutting rules

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Main Authors: Ouchen, Mustapha, Prygarin, Alex
Format: Preprint
Published: 2025
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author Ouchen, Mustapha
Prygarin, Alex
author_facet Ouchen, Mustapha
Prygarin, Alex
contents We use Pomeron evolution equation in zero transverse dimension based on the Abramovskii-Gribov-Kancheli~(AGK) cutting rules to calculate the von Neumann entropy and $q$-moments that used as an experimental test for the Koba-Nielsen-Olesen~(KNO) scaling. In order to avoid the negative probabilities that emerge from the negative AGK weights in the Minkowski space, we reformulate the Pomeron evolution in the Euclidean space. The resulting positive definite probabilities for cut and uncut Pomerons are used in calculating the $q$-moments. The comparison to the experimental data shows that our AGK based model successfully describes $q$-moments dependence on the mean multiplicity without any adjustable parameter in the experimental data of the $\mathtt{p-p}$ collisions by $\mathtt{ALICE}$ Collaboration.
format Preprint
id arxiv_https___arxiv_org_abs_2508_12102
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Pomeron evolution, entanglement entropy and Abramovskii-Gribov-Kancheli cutting rules
Ouchen, Mustapha
Prygarin, Alex
High Energy Physics - Phenomenology
High Energy Physics - Theory
We use Pomeron evolution equation in zero transverse dimension based on the Abramovskii-Gribov-Kancheli~(AGK) cutting rules to calculate the von Neumann entropy and $q$-moments that used as an experimental test for the Koba-Nielsen-Olesen~(KNO) scaling. In order to avoid the negative probabilities that emerge from the negative AGK weights in the Minkowski space, we reformulate the Pomeron evolution in the Euclidean space. The resulting positive definite probabilities for cut and uncut Pomerons are used in calculating the $q$-moments. The comparison to the experimental data shows that our AGK based model successfully describes $q$-moments dependence on the mean multiplicity without any adjustable parameter in the experimental data of the $\mathtt{p-p}$ collisions by $\mathtt{ALICE}$ Collaboration.
title Pomeron evolution, entanglement entropy and Abramovskii-Gribov-Kancheli cutting rules
topic High Energy Physics - Phenomenology
High Energy Physics - Theory
url https://arxiv.org/abs/2508.12102