Title of article
Axial U(1) dynamics in η and η′ photoproduction Original Research Article
Author/Authors
Steven D. Bass، نويسنده , , Stefan Wetzel، نويسنده , , Wolfram Weise، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
18
From page
429
To page
446
Abstract
We discuss the sensitivity of η and η′ photoproduction near threshold to the gluonic OZI breaking parameters in the UA(1)-extended effective chiral Lagrangian for low-energy QCD. Our coupled-channels analysis hints at a strong correlation between the gluon-induced contributions to the η′ mass and the low-energy pp→ppη′ reaction and the near-threshold behaviour of the γp→ηp cross section.
Keywords
Photoproduction , U(1)-problem , Eta meson , Eta-prime meson , Coupled channels , Chiral Lagrangian
Journal title
Nuclear physics A
Serial Year
2001
Journal title
Nuclear physics A
Record number
1193775
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