Finite Temperature Pion Scattering to one-loop in Chiral Perturbation Theory

Details Finite Temperature Pion Scattering to one-loop in Chiral Perturbation Theory Finite Temperature Pion Scattering to one-loop in Chiral Perturbation Theory

2002-03-14

arxiv.org/abs/hep-ph/0203134v2

Phys.Lett.B550:55-64,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 2 figures. Some references and clarifying comments added and new figures included. Final version to appear in Physic

Scientific paper

10.1016/S0370-2693(02)02959-3

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 $T\neq 0$ 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.

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