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Precise measurement of the $\eta$ and $K^{0}$ masses
New measurements of the $\eta$ and $K^{0}$ masses have been performed using decays into $3\pi^{0}$ with the NA48 detector at the CERN SPS. Using symetric decays to reduce systematic effects, the results $M(\eta) = 547.843 \pm 0.051$ MeV/c$^{2}$ and $M(K^{0}) = 497.625 \pm 0.031$ MeV/c$^{2}$ were ob...
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| Lenguaje: | eng |
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2002
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| Acceso en línea: | https://dx.doi.org/10.1238/Physica.Topical.099a00140 http://cds.cern.ch/record/593001 |