The eta and eta' mesons in QCD
classification
✦ hep-lat
hep-ph
keywords
mesonsconstantscontentdecaydiscussexplorefirstflavour
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We study the flavour singlet pseudoscalar mesons from first principles using lattice QCD. We explore the quark content of the $\eta$ and $\eta'$ mesons and we discuss their decay constants.
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