Chiral logs with staggered fermions

C. Aubin, C. Bernard, C. DeTar, Steven Gottlieb, Urs M. Heller, K. Orginos, R. Sugar, D. Toussaint

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a2) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p4) coefficients, these new parameters will need to be bounded.

Original languageEnglish (US)
Pages (from-to)233-235
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
StatePublished - May 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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