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Model-independent approach to ηπ+πγ and ηπ+πγ
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
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2012 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 707, no 1, 184-190 p.Article in journal (Refereed) Published
Abstract [en]

We present a new, model-independent method to analyze radiative decays of mesons to a vector, isovector pair of pions of invariant mass square below the first significant pi pi threshold in the vector channel. It is based on a combination of chiral perturbation theory and dispersion theory. This allows for a controlled inclusion of resonance physics without the necessity to involve vector meson dominance explicitly. As an example, the method is applied to an analysis of the reactions eta -> pi(+)pi(-)gamma and eta' -> pi(+)pi(-)gamma.

Place, publisher, year, edition, pages
2012. Vol. 707, no 1, 184-190 p.
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-170092DOI: 10.1016/j.physletb.2011.12.008ISI: 000299757000030OAI: oai:DiVA.org:uu-170092DiVA: diva2:508275
Available from: 2012-03-07 Created: 2012-03-07 Last updated: 2017-12-07Bibliographically approved

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S0370269311014511

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Kupsc, Andrzej

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