Electromagnetic vertex function of the pion at T > 0

J. van der heide; J. H. Koch; E. Laermann

doi:10.1140/epjc/s10052-006-0018-4

Electromagnetic vertex function of the pion at T > 0

高能物理 - 格点 2011-09-13 v1

作者: J. van der heide , J. H. Koch , E. Laermann

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摘要

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 $Q^2 \le 2.7 {\rm GeV}^2$ .

引用

@article{arxiv.hep-lat/0512035,
  title  = {Electromagnetic vertex function of the pion at T > 0},
  author = {J. van der heide and J. H. Koch and E. Laermann},
  journal= {arXiv preprint arXiv:hep-lat/0512035},
  year   = {2011}
}

备注

17 pages, 8 figures

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