Double nonperturbative gluon exchange: An update on the soft-Pomeron contribution to pp scattering

F. E. Canfora, D. Dudal, I. F. Justo, P. Pais, P. Salgado-Rebolledo, L. Rosa, and D. Vercauteren
Phys. Rev. C 96, 025202 – Published 7 August 2017

Abstract

We employ a set of recent, theoretically motivated fits to nonperturbative unquenched gluon propagators to check on how far double gluon exchange can be used to describe the soft sector of pp scattering data (total and differential cross section). In particular, we use the refined Gribov-Zwanziger gluon propagator (as arising from dealing with the Gribov gauge fixing ambiguity) and the massive Cornwall-type gluon propagator (as motivated from Dyson-Schwinger equations) in conjunction with a perturbative quark-gluon vertex, next to a model based on the nonperturbative quark-gluon Maris-Tandy vertex, popular from Bethe-Salpeter descriptions of hadronic bound states. We compare the cross sections arising from these models with older ISR and more recent TOTEM and ATLAS data. The lower the value of total energy s, the better the results appear to be.

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  • Received 24 May 2017

DOI:https://doi.org/10.1103/PhysRevC.96.025202

©2017 American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsNuclear Physics

Authors & Affiliations

F. E. Canfora1,*, D. Dudal2,3,†, I. F. Justo4,‡, P. Pais1,5,§, P. Salgado-Rebolledo6,∥, L. Rosa7,8,¶, and D. Vercauteren9,**

  • 1Centro de Estudios Científicos (CECS), Casilla 1469, Valdivia, Chile
  • 2KU Leuven Kulak, Department of Physics, Etienne Sabbelaan 53 bus 7657, 8500 Kortrijk, Belgium
  • 3Ghent University, Department of Physics and Astronomy, Krijgslaan 281-S9, 9000 Gent, Belgium
  • 4UFES - Universidade Federal do Espírito Santo, Departamento de Química e Física, Centro de Ciências Exatas, Naturais e da Saúde, Alto Universitário, s/n 29500-000, Guararema, Alegre, ES, Brazil
  • 5Physique Théorique et Mathématique, Université Libre de Bruxelles and International Solvay Institutes, Campus Plaine C. P. 231, B-1050 Bruxelles, Belgium
  • 6Facultad de Ingeniería y Ciencias and UAI Physics Center, Universidad Adolfo Ibáñez, Avda. Diagonal las Torres 2640, Peñalolén, Santiago, Chile
  • 7Dipartimento di Fisica, Universitá di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia Edificio 6, 80126 Napoli, Italy
  • 8INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia Edificio 6, 80126 Napoli, Italy
  • 9Duy Tân University, Institute of Research and Development, P809, 3 Quang Trung, Hải Châu, Đà Nẵng, Vietnam

  • *fcanforat@gmail.com
  • david.dudal@kuleuven.be
  • igorfjusto@gmail.com
  • §pais@cecs.cl
  • patricio.salgadot@uai.cl
  • rosa@na.infn.it
  • **vercauterendavid@dtu.edu.vn

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Issue

Vol. 96, Iss. 2 — August 2017

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