8–12 Jul 2024
Facultat de Biologia, Universitat de Barcelona
Europe/Madrid timezone

Improving pion-pion dispersive amplitude analyses and resonance determination with Forward Dispersion Relations

11 Jul 2024, 14:40
20m
Aula M3 (Facultat de Biologia)

Aula M3

Facultat de Biologia

Contributed talk B. Hadron Spectroscopy

Speaker

Pablo Rabán Mondéjar (Universidad Complutense de Madrid)

Description

A precise description of pion-pion interactions at low energies is fundamental for many processes in hadronic physics. We present preliminary work, which introduces several improvements with respect to a previous dispersive analysis*. This includes a refined treatment of inelasticities, the introduction of G-waves, the study of Forward Dispersion Relations (FDRs) up to 1.6 GeV, and data description up to 1.8 GeV. From the FDR output, we extract resonance poles by means of continued fractions.

*In progress J.R. Peláez, P. Rabán and J. Ruiz de Elvira

**J.R. Pelaez, A. Rodas, and J. Ruiz De Elvira. Global parameterization of pi-pi scattering up to 2 GeV. Eur.Phys.J.C, 79(12):1008, 2019.

session B. Hadron Spectroscopy

Primary authors

Mr Jacobo Ruiz de Elvira Carrascal (Universidad Complutense de Madrid) Mr José Ramón Peláez Sagredo (Universidad Complutense de Madrid) Pablo Rabán Mondéjar (Universidad Complutense de Madrid)

Presentation materials