| Issue |
EPJ Web Conf.
Volume 130, 2016
MESON 2016 – 14th International Workshop on Meson Production, Properties and Interaction
|
|
|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 5 | |
| Section | 04 Meson decays - contributions | |
| DOI | https://doi.org/10.1051/epjconf/201613004001 | |
| Published online | 29 November 2016 | |
https://doi.org/10.1051/epjconf/201613004001
A data-driven approach to η and η′ Dalitz decays
1 Grup de Física Teòrica, Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain
2 Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), Campus UAB, E-08193 Bellaterra (Barcelona), Spain
* e-mail: rescriba@ifae.es
Published online: 29 November 2016
Data-driven model-independent predictions for the dilepton invariant mass spectra and branching ratios of the single and double Dalitz decays η(′) → ℓ+ℓ− γ and η(′) → ℓ+ℓ− ℓ+ℓ− (ℓ = e or μ) are provided by means of an approach based on the use of rational approximants applied to the available experimental data in the space-like region of the η and η′ transition form factors.
© The Authors, published by EDP Sciences, 2016
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