The gluon/charm content of the eta' meson and instantons

Details The gluon/charm content of the eta' meson and instantons The gluon/charm content of the eta' meson and instantons

1997-06-10

arxiv.org/abs/hep-ph/9706316v1

Phys.Rev. D57 (1998) 2001-2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, LATEX

Scientific paper

10.1103/PhysRevD.57.2001

Motivated by recent CLEO measurements of the B-->\eta' K decay, we evaluate gluon/charm content of the eta' meson using the interacting instanton liquid model of the QCD vacuum. Our result is very large due to the strong field of small-size instantons. We show that it provides quantitative explanations of the CLEO data on the B-->\eta' K decay rate (as well as inclusive process B-->\eta' X), via a virtual Cabbibo-unsuppressed decay into \bar c c pair which then becomes eta'. If so, a significant charm component should be present in other hadrons also. In particular, we found a large contribution of the charmed quark in the polarised deep-inelastic scattering on a proton.

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