Akademska digitalna zbirka SLovenije - logo
E-viri
Recenzirano Odprti dostop
  • η−η′ masses and mixing: a l...
    Gérard, J.-M.; Kou, E.

    Physics letters. B, 06/2005, Letnik: 616, Številka: 1-2
    Journal Article

    We reconcile the 1/Nc expansion with the observed η−η′ mass spectrum. The chiral corrections introduced for that purpose are natural and consistent with the octet–singlet mixing angle θ=−(22±1)° extracted from phenomenology in the large Nc limit.