The Gluonic Decay of the $b$--Quark and tne $η'$--Meson

Details The Gluonic Decay of the $b$--Quark and tne $η'$--Meson The Gluonic Decay of the $b$--Quark and tne $η'$--Meson

1997-08-14

arxiv.org/abs/hep-ph/9708348v2

Phys.Lett.B415:83-89,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 latex pages

Scientific paper

10.1016/S0370-2693(97)01213-6

The observed inclusive decay of B-mesons into eta' + X is interpreted as 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 + eta', similar to b ---> s + J/psi. The hadronic recoiling system is found to have a relatively large mass. Analogously one expects a decay of the type b ---> s + sigma. 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 eta'- and sigma-mesons.

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