Mixing and Decay Constants of Pseudoscalar Mesons(10)
发布时间:2021-06-05
发布时间:2021-06-05
We propose a new eta-eta' mixing scheme where we start from the quark flavor basis and assume that the decay constants in that basis follow the pattern of particle state mixing. On exploiting the divergences of the axial vector currents - which embody the
ratherprecise:weobtainedφ=39.3 ±1 whichgivesasingle-octetmixingangleofθ= 15.4 .Fortheangleθ8whichisresponsiblefortheη,η′ratioinradiativeJ/ψdecayswefoundavalueof 21.2 .Thevaluesforfqandforfsdi erfromthetheoreticalpredictions(to rstorderof avorsymmetrybreaking)onlymildly.
vii)Itisstraightforwardtogeneralizethenewmixingschemetoincludethemixingwiththeηcwhichisofparticularrecentinterest.HerethedecayconstantfcenterswhichwetakeequaltofJ/ψ.Withthisingredientthec
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