Nonperturbative QCD contribution to gluon-gluon-eta' vertex

Abstract

We investigate the momentum dependence of the g*-g-eta' vertex form factor in the presence of the nonperturbative QCD vacuum condensate. The behaviour of this form factor is crucial for, among other things, some proposed mechanisms devised to explain the large branching ratio for fast eta' production in charmless B decays observed by CLEO. We show that the leading momentum dependence of this vertex form factor is not altered when the contribution of nonperturbative quark condensate is considered.

arXiv comment9 pages, LaTex, 2 postscript figures (included)

References in corpus (2)

• B to eta' + X and The QCD Anomaly
• Enhanced $b\to sg$ Decay, Inclusive ${\eta }^{\prime }$ Production, and the Gluon Anomaly

Cited by in corpus (6)

• On the ${\eta }^{\prime }$ Gluonic Admixture
• Dynamical spin effects in the holographic light-front wavefunctions of light pseudoscalar mesons
• New measurement of the rare decay $\varphi \to {\eta }^{\prime }\gamma$ with CMD-2
• Possible large direct CP asymmetry in hadronic B+- -> π+- η' decays
• Wilson lines - color charge densities correlators and the production of eta' in the CGC for pp and pA collisions
• B-> K photon photon via intermediate eta'