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Properties of light pseudoscalars from lattice QCD with HISQ ensembles

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arxiv 1111.4314 v1 pith:YB7244SQ submitted 2011-11-18 hep-lat

Properties of light pseudoscalars from lattice QCD with HISQ ensembles

MILC Collaboration: A. Bazavov , C. Bernard , C. DeTar , W. Freeman , Steven Gottlieb , U.M. Heller , J.E. Hetrick , J. Kim
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J. Laiho L. Levkova M. Lightman M. Oktay J. Osborn R.L. Sugar D. Toussaint R.S. Van de Water
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keywords ensembleshisqlatticemasseschiralconfigurationsconstantscontinuum
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We fit lattice-QCD data for light-pseudoscalar masses and decay constants, from HISQ configurations generated by MILC, to SU(3) staggered chiral perturbation theory. At present such fits have rather high values of chi^2/d.o.f., possibly due to the lack of ensembles with lighter-than-physical sea strange-quark masses. We propose solutions to this problem for future work. We also perform simple linear interpolations near the physical point on two ensembles with different lattice spacings, and obtain the preliminary result (f_K / f_pi)^phys = 1.1872(41) in the continuum limit.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Impact of Dynamical Charm Quark and Mixed Action Effect on Light Hadron Masses and Decay Constants

    hep-lat 2026-03 conditional novelty 6.0

    A dynamical charm quark does not measurably change light-hadron masses or decay constants, and a clover-on-HISQ mixed action reduces O(a^2) discretization errors in the continuum limit.