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Three-pseudoscalar photon interactions in chiral perturbation theory

Bijnens, Johan LU orcid ; Bramon, Albert and Cornet, Fernando (1990) In Physics Letters B 237(3-4). p.488-494
Abstract

We have calculated the next to leading corrections to the processes γπ- → π0π- and η → π+π-γ in chiral perturbation theory. The loop diagrams are divergent, requiring the contributions from the O(p6) lagrangian. The finite parts of the coefficients of the O(p6) terms are calculated assuming their saturation by the vector meson contribution. These corrections improve the agreement between the theoretical predictions and the experimental data.

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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters B
volume
237
issue
3-4
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:2542418015
ISSN
0370-2693
DOI
10.1016/0370-2693(90)91212-T
language
English
LU publication?
no
id
17ac4895-131e-4ecc-a03e-6a966a4e2a36
date added to LUP
2019-05-03 09:41:43
date last changed
2021-03-21 04:48:41
@article{17ac4895-131e-4ecc-a03e-6a966a4e2a36,
  abstract     = {{<p>We have calculated the next to leading corrections to the processes γπ<sup>-</sup> → π<sup>0</sup>π<sup>-</sup> and η → π<sup>+</sup>π<sup>-</sup>γ in chiral perturbation theory. The loop diagrams are divergent, requiring the contributions from the O(p<sup>6</sup>) lagrangian. The finite parts of the coefficients of the O(p<sup>6</sup>) terms are calculated assuming their saturation by the vector meson contribution. These corrections improve the agreement between the theoretical predictions and the experimental data.</p>}},
  author       = {{Bijnens, Johan and Bramon, Albert and Cornet, Fernando}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{3-4}},
  pages        = {{488--494}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{Three-pseudoscalar photon interactions in chiral perturbation theory}},
  url          = {{http://dx.doi.org/10.1016/0370-2693(90)91212-T}},
  doi          = {{10.1016/0370-2693(90)91212-T}},
  volume       = {{237}},
  year         = {{1990}},
}