QCD Anomaly Coupling for the η'-g-g Vertex in Inclusive Decay B→η' X_s

1999/02/09 by Taizo Muta, Mao-Zhi Yang, Muta, Taizo +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9902275

9 pages, latex, one figure included

arxiv created 1999/02/09 · arxiv updated 2009/11/30

Abstract

The QCD anomaly coupling of η'-g-g is treated as the axial vector current triangle anomaly. By assuming the divergent axial vector coupling of the η' meson with the quark line in the triangle diagram, we calculate the QCD anomaly of η'-g-g as well as the QED anomaly of η'-γ-γ with only one common parameter κ_η'. We obtain consistent results of the branching ratios for B→η' X_s, J/ψ→η'γ and η'→ γγ when comparing with experimental data.

Related

• Contribution of b→ s gg through the QCD anomaly in exclusive decays B → (η',η) (K, K^*)
• B → η' X_s in the Standard Model
• The inclusive B->eta' X_s decay and b-> sg* form factors
• The box anomaly and radiative decays of η(η')-mesons
• Axial Anomaly and Mixing Parameters of Pseudoscalar Mesons