Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pion electromagnetic form factor with Minkowskian dynamics

Full text
Author(s):
Ydrefors, E. [1] ; de Paula, W. [1] ; Alvarenga Nogueira, J. H. [1, 2, 3] ; Frederico, T. [1] ; Salme, G. [2]
Total Authors: 5
Affiliation:
[1] Inst Tecnol Aeronaut, DCTA, BR-12228900 Sao Jose Dos Campos - Brazil
[2] Ist Nazl Fis Nucl, Sez Roma, Piazzale A Moro 2, I-00185 Rome - Italy
[3] Rome Univ La Sapienza, Phys Dept, Piazzale A Moro 2, I-00185 Rome - Italy
Total Affiliations: 3
Document type: Journal article
Source: Physics Letters B; v. 820, SEP 10 2021.
Web of Science Citations: 0
Abstract

The pion electromagnetic form factor has been calculated for the first time from the solutions of the Bethe-Salpeter equation, obtained directly in Minkowski space by using the Nakanishi integral representation of the Bethe-Salpeter amplitude. The one-gluon exchange kernel contains as inputs the quark and gluon masses, as well as a scale parameter featuring the extended quark-gluon vertex. The range of variability of these parameters is suggested by lattice calculations. After presenting a very successful comparison with the existing data in the whole range of the momentum transfer, we show how inserting the light-front (LF) formalism in our approach allows to achieve further interesting results, like the evaluation of the LF valence form factor and a first investigation of the end-points effects. (C) 2021 Published by Elsevier B.V. (AU)

FAPESP's process: 13/26258-4 - Superdense matter in the universe
Grantee:Manuel Máximo Bastos Malheiro de Oliveira
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/21758-2 - Relativistic few-body problems and antiproton reactions
Grantee:Emanuel Arthur Ydrefors
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
Grantee:Brett Vern Carlson
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/25143-7 - Relativistic two and three-body problems in Minkowski space in (2+1) and (3+1) dimensions
Grantee:Emanuel Arthur Ydrefors
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/19094-8 - Three-body heavy meson decay and CP violation
Grantee:Jorge Henrique de Alvarenga Nogueira
Support type: Scholarships in Brazil - Doctorate (Direct)