RT Journal Article
T1 The pion-kaon scattering amplitude and the K_0(∗) (700) and K(∗) (892) resonances at finite temperature
A1 Gómez Nicola, Ángel
A1 Ruiz De Elvira Carrascal, Jacobo
A1 Vioque Rodríguez, Andrea
AB 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.
PB Springer
SN 1126-6708
YR 2023
FD 2023-08-23
LK https://hdl.handle.net/20.500.14352/103173
UL https://hdl.handle.net/20.500.14352/103173
LA eng
NO 2023 Descuento SCOAP
NO Ministerio de Ciencia e Innovación (España)
NO European Commission
NO Swiss National Science Foundation
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 8 abr 2025