Matches in SemOpenAlex for { <https://semopenalex.org/work/W2145664071> ?p ?o ?g. }
- W2145664071 abstract "We have computed the $SU(2)$ low-energy constant ${l}_{5}$ and the mass splitting between charged and neutral pions from a lattice QCD simulation of ${n}_{f}=2+1$ flavors of domain wall fermions at a scale of ${a}^{ensuremath{-}1}=2.33text{ }text{ }mathrm{GeV}$. Relating ${l}_{5}$ to the $S$ parameter in QCD we obtain a value of $S({m}_{H}=120text{ }text{ }mathrm{GeV})=0.42(7)$, in agreement with previous determinations. Our result can be compared with the value of $S$ from electroweak precision data which constrains strongly interacting models of new physics like technicolor. This work in QCD serves as a test for the methods to compute the $S$ parameter with domain wall fermions in theories beyond the standard model. We also infer a value for the pion mass splitting in agreement with experiment." @default.
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- W2145664071 date "2010-01-14" @default.
- W2145664071 modified "2023-09-23" @default.
- W2145664071 title "Sparameter in QCD from domain wall fermions" @default.
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- W2145664071 doi "https://doi.org/10.1103/physrevd.81.014504" @default.
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