SU(2) chiral perturbation theory low-energy constants from staggered 2+1 flavor simulations

Enno E. Scholz, Szabolcs Borsányi, Stephan Dürr, Zoltán Fodor, Sandor D. Katz, Stefan Krieg, Andreas Schäfer, Kalman K. Szabo

Research output: Contribution to journalConference articlepeer-review


We measure the pion mass and decay constant on ensembles generated by the Wuppertal-Budapest Collaboration, and extract the NLO low-energy constants l¯ 3 and l¯ 4 of SU(2) chiral perturbation theory. The data are generated in 2+1 flavor simulations with Symanzik glue and 2-fold stout-smeared staggered fermions, with pion masses varying from 135 MeV to 400 MeV, lattice scales between 0.7 GeV and 2.0 GeV, and ms kept at its physical value. Furthermore, by excluding the lightest mass points, we are able to test the reliability of SU(2) chPT as a tool to extrapolate towards the physical point from higher pion masses.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - 2011
Event29th International Symposium on Lattice Field Theory, Lattice 2011 - Squaw Valley, Lake Tahoe, United States
Duration: Jul 10 2011Jul 16 2011

All Science Journal Classification (ASJC) codes

  • General


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