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  • 标题:Vector meson form factors
  • 本地全文:下载
  • 作者:M. Guertler
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2008
  • 卷号:2008
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:We present preliminary results for the electromagnetic form factors of vector mesons in lattice QCD. The analysis is based on two- and three-point functions, calculated with two-flavour clover-improved configurations for a lattice spacing of a ∼ 0.08 fm. The pions on these lattices are too heavy (mp ≥ 400 MeV) to allow for r meson decay. We obtain a charge radius r2 ∼ 0.49(5) fm2, a g-factor gr ∼ 1.6(1), and a small negative quadrupole moment mQ = −0.017(2) fm2.
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