uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Reactions with pions and vector mesons in the sector of odd intrinsic parity
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
2013 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 49, no 9, 116- p.Article in journal (Refereed) Published
Abstract [en]

TheWess-Zumino-Witten structure is supplemented by a simple vector-meson Lagrangian where the vector mesons are described by antisymmetric tensor fields. With the rho-omega-pi coupling as the only parameter in the sector of odd intrinsic parity, i.e. without additional contact terms, one can achieve a proper description of the decay of an omega-meson into three pions, the single-and double-virtual pion transition form factor and the three-pion production in electron-positron collisions.

Place, publisher, year, edition, pages
2013. Vol. 49, no 9, 116- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-210237DOI: 10.1140/epja/i2013-13116-6ISI: 000325258100001OAI: oai:DiVA.org:uu-210237DiVA: diva2:661956
Available from: 2013-11-05 Created: 2013-11-04 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Theoretical Studies of Hadronic Reactions with Vector Mesons
Open this publication in new window or tab >>Theoretical Studies of Hadronic Reactions with Vector Mesons
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Aiming at a systematic inclusion of pseudoscalar and vector mesons as active degrees of freedom in an effective Lagrangian, studies have been performed in this thesis concerning the foundations of such an effective Lagrangian as well as tree-level and beyond-tree-level calculations. Hereby, vector mesons are described by antisymmetric tensor fields.

First, an existing power counting scheme for both pseudoscalar and vector mesons is extended to include the pseudoscalar-meson singlet in a systematic way. Based on this, tree-level calculations are carried out which are in good agreement with the available experimental data and several processes are predicted. In particular, the ω-π0 transition form factor is in better agreement with experimental data than the prediction done in the vector-meson-dominance model. Furthermore, a Lagrangian with vector mesons is used together with the leading contributions of chiral perturbation theory in order to calculate tree-level reactions in the sector of odd intrinsic parity. It turns out that both the Lagrangian with vector mesons and the Lagrangian of chiral perturbation theory are needed to describe experimental data.

Additionally, a feasibility check for one-loop calculations with pseudoscalar and vector mesons in the loop is performed. Thereby, only a limited number of interaction terms in the Lagrangian with vector mesons is used. The results are used to both renormalise the low-energy constants of chiral perturbation theory up to chiral order Q4 and to determine the influence of loops with vector mesons on masses and decay constants of pseudoscalar mesons.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2016. 63 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1361
Keyword
Hadron physics, Vector mesons, Effective field theories, Chiral Lagrangian, Meson-meson interactionss
National Category
Subatomic Physics
Research subject
Physics with specialization in Nuclear Physics
Identifiers
urn:nbn:se:uu:diva-281288 (URN)978-91-554-9532-9 (ISBN)
Public defence
2016-05-19, Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:15 (English)
Opponent
Supervisors
Available from: 2016-04-26 Created: 2016-03-22 Last updated: 2016-04-29

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Terschlüsen, CarlaLeupold, Stefan

Search in DiVA

By author/editor
Terschlüsen, CarlaLeupold, Stefan
By organisation
Nuclear PhysicsDepartment of Physics and Astronomy
In the same journal
European Physical Journal A
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 890 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf