Electromagnetic vertex function of the pion at T > 0

Abstract

The matrix element of the electromagnetic current between pion states is calculated in quenched lattice QCD at a temperature of $T=0.93T_c$. The nonperturbatively improved Sheikholeslami-Wohlert action is used together with the corresponding $\mathcal{O}(a)$ improved vector current. The electromagnetic vertex function is extracted for pion masses down to $360\mathrm{MeV}$ and momentum transfers $Q^2\le 2.7{\mathrm{GeV}}^2$.

17 pages, 8 figures

References in corpus (4)

• Probing hadron wave functions in Lattice QCD
• Pion structure from improved lattice QCD: form factor and charge radius at low masses
• The pion form factor in improved lattice QCD
• Finite temperature pion vector form factors in Chiral Perturbation Theory