RT Book, Section
T1 Rho and sigma mesons in unitarized thermal XPT
A1 Llanes Estrada, Felipe José
A1 Dobado González, Antonio
A1 Gómez Nicola, Ángel
A1 Peláez Sagredo, José Ramón
AB We present our recent results for the rho and sigma mesons considered as resonances in pion-pion scattering in a thermal bath. We use chiral perturbation theory to order p(4) for the low energy behaviour, then extend the analysis via the unitarization method of the Inverse Amplitude into the resonance region. The width of the rho broadens about twice the amount required by phase space considerations alone, its mass staying practically constant up to temperatures of order 150 MeV. The sigma meson behaves in accordance to chiral symmetry restoration expectations.
PB World Scientific
SN 981-238-333-6
SN 981-238-333-6
YR 2003
FD 2003
LK https://hdl.handle.net/20.500.14352/60749
UL https://hdl.handle.net/20.500.14352/60749
NO International Conference on Strong and Electroweak Matter (5. 2002. Heidelberg, Germany)
DS Docta Complutense
RD 18 abr 2025