• Open Access

Soft pomeron in the color glass condensate approach

Carlos Contreras, Eugene Levin, and Michael Sanhueza
Phys. Rev. D 106, 034011 – Published 11 August 2022

Abstract

In this paper we suggest a new approach to the structure of the soft Pomeron: based on the t-channel unitarity, we expressed the exchange of the soft Pomeron through the interaction of the dipole of small size of the order of 1/Qs(Y) [Qs(Y) is the saturation momentum] with the hadrons. Therefore, it is shown that the typical distances in soft processes are small r1/Qs(12Y), where Y=lns. The saturation momentum, which determines the energy dependence of the scattering amplitude, is proportional to Qs2(12Y)exp(12λY), with λ0.2, and this behavior is in perfect agreement with the phenomenological Donnachie-Landshoff Pomeron. We demonstrate that the saturation models could describe the experimental data for σtot,σel,σdiff and Bel. Hence, our approach is a good first approximation to start discussion of the soft processes in the color glass condensate approach on the solid theoretical basis.

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  • Received 29 March 2022
  • Accepted 26 July 2022

DOI:https://doi.org/10.1103/PhysRevD.106.034011

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Carlos Contreras1,*, Eugene Levin1,2,3,†, and Michael Sanhueza1,‡

  • 1Departamento de Física, Universidad Técnica Federico Santa María, Avenida España 1680, Casilla 110-V, Valparaíso, Chile
  • 2Centro Científico–Tecnológico de Valparaíso, Avenida España 1680, Casilla 110-V, Valparaíso, Chile
  • 3Department of Particle Physics, School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel

  • *carlos.contreras@usm.cl
  • leving@tauex.tau.ac.il; eugeny.levin@usm.cl
  • michael.sanhuezar@sansano.usm.cl

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Vol. 106, Iss. 3 — 1 August 2022

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