scholarly journals Staggered chiral perturbation theory fits to light pseudoscalar masses and decay constants from HISQ ensembles

2012 ◽  
Author(s):  
Matthew Lightman
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Chiral Perturbation ◽  
Decay Constants

scholarly journals Masses and decay constants of pions and kaons in mixed-action staggered chiral perturbation theory

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Jon A. Bailey ◽  
Jongjeong Kim ◽  
Weonjong Lee ◽  
Hyung-Jin Kim ◽  
Boram Yoon
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Chiral Perturbation ◽  
Decay Constants ◽  
Mixed Action

scholarly journals CURRENT PHYSICS RESULTS FROM STAGGERED CHIRAL PERTURBATION THEORY

2006 ◽  
Vol 21 (39) ◽  
pp. 2913-2930 ◽  
Author(s):  
C. AUBIN
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Quark Mass ◽  
Continuum Limit ◽  
Decay Constant ◽  
Pion Mass ◽  
Meson Decay ◽  
Mass Limit ◽  
Chiral Perturbation ◽  
Decay Constants

We review several results that have been obtained using lattice QCD with the staggered quark formulation. Our focus is on the quantities that have been calculated numerically with low statistical errors and have been extrapolated to the physical quark mass limit and continuum limit using staggered chiral perturbation theory. We limit our discussion to a brief introduction to staggered quarks, and applications of staggered chiral perturbation theory to the pion mass, decay constant, and heavy–light meson decay constants.

ON THE SIGNIFICANCE OF RECENT LATTICE RESULTS FOR THE CHIRAL LAGRANGIAN

2008 ◽  
Vol 23 (21) ◽  
pp. 3187-3190
Author(s):  
H. LEUTWYLER
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Quark Condensate ◽  
Low Energy ◽  
Coupling Constants ◽  
Chiral Perturbation ◽  
Decay Constants ◽  
Energy Domain ◽  
The Masses ◽  
Ozi Rule

The report concerns only one of the issues discussed in my talk at ICFP 2007: the significance of recent lattice results for our understanding of the nonperturbative phenomena in the low energy domain of QCD. All of these results are consistent with the phenomenological estimates for the coupling constants of the chiral SU (2)× SU (2) Lagrangian and thereby corroborate the predictions based on these. In the case of SU (3)× SU (3), the results also confirm the old estimates obtained from chiral perturbation theory. In particular, the first two terms in the expansion of the masses and decay constants in powers of ms appear to represent a decent approximation for the full series. Some of the lattice results indicate that the quark condensate violates the OZI-rule rather strongly, but as there are some discrepancies concerning this issue, it is too early to draw conclusions.

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