RT Journal Article
T1 Finite temperature pion vector form factors in chiral perturbation theory
A1 Llanes Estrada, Felipe José
A1 Gómez Nicola, Ángel
A1 Peláez Sagredo, José Ramón
AB We discuss the thermal behaviour of the pion vector form factors and calculate them in one-loop chiral perturbation theory. The perturbative result is used to analyze the T  dependent electromagnetic pion charge radius, obtaining a rough estimate of the deconfinement critical temperature. Imposing thermal unitarity, we generate the ρ resonance pole for the form factor in the center of mass frame. The ρ peak height in the modulus of the form factor decreasesfor increasing temperature, while its width increases and the peak position is slightly shifted downwards for T _ 150 MeV. These results point in the direction suggested by many analysis of dilepton production data in relativistic heavy ion collisions.
PB Elsevier Science Bv
SN 0370-2693
YR 2005
FD 2005-01-27
LK https://hdl.handle.net/20.500.14352/50857
UL https://hdl.handle.net/20.500.14352/50857
LA eng
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NO © 2004 Elsevier B.V. All rights reserved.Work supported from the Spanish CICYT projects, FPA2000 0956, PB98-0782 and BFM2000-1326.
NO Spanish CICYT
DS Docta Complutense
RD 17 may 2024