Finite-temperature pion scattering to one loop in chiral perturbation theory



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Llanes Estrada, Felipe José and Gómez Nicola, Ángel and Peláez Sagredo, José Ramón (2002) Finite-temperature pion scattering to one loop in chiral perturbation theory. Physics Letters B, 550 . pp. 55-64. ISSN 0370-2693

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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.

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©2002 Elsevier Science B.V. All rights reserved.
The authors thank A. Dobado for useful comments and discussions. F.J.Ll.-E. thanks P. Bicudo, S. Cotanch, P. Maris, E. Ribeiro and A. Szczepaniak too. Work supported from the Spanish CICYT projects, FPA2000-0956, PB98-0782 and BFM2000-1326.

Uncontrolled Keywords:Rho-Meson, Reaction-Rates, Field-Theory, Rules, Lagrangians, Imaginary, Lengths, Mass
Subjects:Sciences > Physics
ID Code:23389
Deposited On:30 Oct 2013 17:01
Last Modified:31 Dec 2020 00:01

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