2026-06-27T22:42:03Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1031732024-05-31T17:15:25Zcom_20.500.14352_14col_20.500.14352_15

Gómez Nicola, Ángel Ruiz De Elvira Carrascal, Jacobo Vioque Rodríguez, Andrea 2024-04-16T17:46:16Z 2024-04-16T17:46:16Z 2023-08-23 1126-6708 10.1007/JHEP08(2023)148 https://hdl.handle.net/20.500.14352/103173 1029-8479 https//doi.org/10.1007/JHEP08(2023)148 https://link.springer.com/article/10.1007/JHEP08(2023)148 https://arxiv.org/abs/2304.08786 We perform a complete calculation of the pion-kaon scattering amplitude in Chiral Perturbation Theory at finite temperature, paying particular attention to the analytic structure of the amplitude and the main differences with respect to the zero temperature case. We also extend the Inverse Amplitude Method at finite temperature for unequal-mass scattering processes, which allows us to unitarize the amplitude and obtain the thermal evolution of the K-0(*)(700) and K-*(892) pole parameters. As a direct application of our analysis, we show that the thermal evolution of the K-0(*)(700) resonance is crucial to explain the behavior of the scalar susceptibility for isospin I = 1/2, which in turn, is directly connected with chiral and U(1)A restoration properties of the QCD phase diagram. eng http://creativecommons.org/licenses/by/4.0/ open access Attribution 4.0 International The pion-kaon scattering amplitude and the K_0(∗) (700) and K(∗) (892) resonances at finite temperature journal article