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oai:docta.ucm.es:20.500.14352/588142023-08-25T10:18:09Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Llanes Estrada, Felipe José author Gómez Nicola, Ángel author Peláez Sagredo, José Ramón author 2002-12-12 We present the pion-pion elastic scattering amplitude at finite temperature to one-loop in chiral perturbation theory. The thermal scattering amplitude properly defined allows to generalize the perturbative unitarity relation to the T 0 0 case. Our result provides a model independent prediction of an enhanced pion-pion low-energy phase shift with the temperature and it has physical applications within the context of relativistic heavy ion collisions. 0370-2693 https://hdl.handle.net/20.500.14352/58814 http://dx.doi.org/10.1016/S0370-2693(02)02959-3 http://arxiv.org/abs/hep-ph/0203134 http://www.sciencedirect.com/ Finite-temperature pion scattering to one loop in chiral perturbation theory