Document Type

Conference Paper

Publication Date

2024

DOI

10.5506/APhysPolBSupp.17.6-A13

Publication Title

Acta Physica Polonica B

Volume

17

Issue

6

Pages

6-A13 (1-6)

Conference Name

International Meeting Excited QCD, 14-20 January 2024, Benasque, Huesca, Spain

Abstract

We report on our recent works on dispersive analyses of ππ → ππ and ππ → K ¯ K scattering data and their use to address two controversial aspects of the f₀(1370) and f₀(980) scalar mesons. First, we show with model-independent techniques that the f₀(1370) pole does indeed appear in meson–meson scattering data, although there is tension between its values in the ππ and K ¯ K channels. Second, we explain the proper interpretation of the f₀(980) pole residue, which would otherwise lead to branching ratios larger than one. We have also provided simple ππ → ππ data parameterizations that implement both features together with other resonances while respecting various dispersive constraints.

Rights

© 2024 The Authors.

Published under the terms of a Creative Commons Attribution 4.0 International (CC BY 4.0) License.

Comments

The DOI to this article links to a landing page. Direct link to article: https://www.actaphys.uj.edu.pl/fulltext?series=Sup&vol=17&aid=6-A13

Original Publication Citation

Peláez, J., Rodas, A., & Ruiz de Elvira, J. (2024). f₀(1370) and f₀(980) controversies from dispersive data analyses. Acta Physica Polonica B. Proceedings Supplement, 17(6), 6-A13. https://doi.org/10.5506/APhysPolBSupp.17.6-A13

ORCID

0000-0003-2702-5286 (Rodas)

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