The pion form factor from first principles

Jan van der Heide

doi:10.1063/1.1799698

The pion form factor from first principles

高能物理 - 格点 2009-11-10 v1 核理论

作者: Jan van der Heide

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摘要

We calculate the electromagnetic form factor of the pion in quenched lattice QCD. The non-perturbatively improved Sheikoleslami-Wohlert lattice action is used together with the ${\mathcal O}(a)$ improved current. We calculate form factor for pion masses down to $m_\pi = 360 MeV$ . We compare the mean square radius for the pion extracted from our form factors to the value obtained from the 'Bethe Salpeter amplitude'. Using (quenched) chiral perturbation theory, we extrapolate our results towards the physical pion mass.

关键词

form factors chiral perturbation theory lattice qcd

引用

@article{arxiv.hep-lat/0309183,
  title  = {The pion form factor from first principles},
  author = {Jan van der Heide},
  journal= {arXiv preprint arXiv:hep-lat/0309183},
  year   = {2009}
}

备注

5 pages, 2 figures; proceedings of Hadron03, Aschaffenburg, Germany

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