η−η′ mixing from U(3)L⊗U(3)R chiral perturbation theory
Author/Authors :
P. Herrera-Sikl?dy، نويسنده , , J.I. Latorre، نويسنده , , J. P. Pascual Starink، نويسنده , , J. Taron، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Pages :
7
From page :
326
To page :
332
Abstract :
We obtain explicit expressions for the η and η′ masses and decay constants using UL(3)⊗UR(3) chiral perturbation theory at next-to-leading order in a combined expansion in p2 and 1/Nc. A numerical fit of the parameters appearing to this order of the expansion is also discussed.
