Chiral perturbation theory for anomalous processes
Bijnens, J. LU
; Bramon, A.
and Cornet, F.
(1990)
In Zeitschrift für Physik C Particles and Fields
46(4).
p.599-607
- Abstract
A general expression containing all the divergences in Chiral Perturbation Theory at one loop for anomalous processes has been calculated. The nonrenormalization of some amplitudes (Adler-Bardeen theorem) is observed. The different types of corrections are identified. The contributions from vector meson exchange are determined for all anomalous processes. Explicit cancellation of divergences is shown for π0, η and η′ decays to γγ*. The dependence on the γ* mass squared is predicted to be essentially the same for all the three processes. It proceeds mainly through the VMD estimate of the finite parts of the next order Lagrangian and compares reasonably well with the available experimental data.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7ed8bb03-946a-49d2-9206-bd3766f8e830
- author
- Bijnens, J.
LU
; Bramon, A.
and Cornet, F.
- publishing date
- 1990-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Zeitschrift für Physik C Particles and Fields
- volume
- 46
- issue
- 4
- pages
- 9 pages
- publisher
- Springer
- external identifiers
-
- scopus:0000128308
- ISSN
- 0170-9739
- DOI
- 10.1007/BF01560261
- language
- English
- LU publication?
- no
- id
- 7ed8bb03-946a-49d2-9206-bd3766f8e830
- date added to LUP
- 2019-05-03 09:43:47
- date last changed
- 2021-01-03 10:21:18
@article{7ed8bb03-946a-49d2-9206-bd3766f8e830,
abstract = {{<p>A general expression containing all the divergences in Chiral Perturbation Theory at one loop for anomalous processes has been calculated. The nonrenormalization of some amplitudes (Adler-Bardeen theorem) is observed. The different types of corrections are identified. The contributions from vector meson exchange are determined for all anomalous processes. Explicit cancellation of divergences is shown for π<sup>0</sup>, η and η′ decays to γγ<sup>*</sup>. The dependence on the γ<sup>*</sup> mass squared is predicted to be essentially the same for all the three processes. It proceeds mainly through the VMD estimate of the finite parts of the next order Lagrangian and compares reasonably well with the available experimental data.</p>}},
author = {{Bijnens, J. and Bramon, A. and Cornet, F.}},
issn = {{0170-9739}},
language = {{eng}},
month = {{12}},
number = {{4}},
pages = {{599--607}},
publisher = {{Springer}},
series = {{Zeitschrift für Physik C Particles and Fields}},
title = {{Chiral perturbation theory for anomalous processes}},
url = {{http://dx.doi.org/10.1007/BF01560261}},
doi = {{10.1007/BF01560261}},
volume = {{46}},
year = {{1990}},
}