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arXiv · hep-lat/0512035

Electromagnetic vertex function of the pion at T > 0

J. van der heide·J. H. Koch·E. Laermann
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Abstract

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

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J. van der heide, J. H. Koch, E. Laermann. 2005-12-23. Electromagnetic vertex function of the pion at T > 0. https://doi.org/10.1140/epjc%2Fs10052-006-0018-4

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