Hadronic Signature of the Three-Gluon Coupling

Abstract:The inclusive decay of B-mesons into η ′ + X is the consequence of the gluonic decay of the b-quark into an s-quark. As a result of the QCD anomaly this decay proceeds partly as the decay b → s + η ′ , similar to b → s + J/ψ. The hadronic recoiling system is found to have a relatively large mass. Analogously one expects a decay of the type b → s+σ.The branching ratios for these decays are large (of the order of 10 %). The results indicate that there is no room for an anomalously large chromomagnetic decay mode of the b-quark.Gluon jets are expected to exhibit an anomalously large tendency to fragment into η ′ -and σ-mesons.

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Hadronic Signature of the Three-Gluon Coupling

Abstract: It is argued that an excess of r\' mesons in gluon jets may be a clear indication for the three-gluon vertex of quantum chromodynamics.

Cited by 7 publications

References 15 publications

?c as we know it

?c as we know it

η c as we know it

The gluonic decay of the b-quark and the η′-meson

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