Speaker
Ms
Andrea Vioque-Rodríguez
(Universidad Complutense Madrid)
Description
We analyze the $f_0(500)$ state generated as a pole of $\pi\pi$ scattering within unitarized low-energy effective theories at finite temperature. The relation of that thermal pole with the scalar susceptibility is studied within a scalar saturation approach, which yields results complying with lattice data. The robustness and predictability of this method are studied in terms of the low-energy constants involved and the unitarization method. A detailed fit to lattice data is provided, which is compared to a Hadron Resonance Gas description. Our analysis highlights the importance of this thermal state to describe the main qualitative features of the scalar susceptibility around the chiral transition.
Authors
Ms
Andrea Vioque-Rodríguez
(Universidad Complutense Madrid)
Prof.
Angel Gómez Nicola
(Universidad Complutense Madrid)
Ms
Silvia Ferreres-Solé
(Lund University)
