The gluonic decay of the b quark and the $\eta '$ meson

The inclusive decay of B-mesons into eta' + 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 + eta', similar to b ---> s + J/psi. The hadronic recoiling system is found to have a r...

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Autor principal: Fritzsch, Harald
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(97)01213-6
http://cds.cern.ch/record/332010
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author Fritzsch, Harald
author_facet Fritzsch, Harald
author_sort Fritzsch, Harald
collection CERN
description The inclusive decay of B-mesons into eta' + 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 + 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.
id cern-332010
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
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spelling cern-3320102023-03-14T20:11:28Zdoi:10.1016/S0370-2693(97)01213-6http://cds.cern.ch/record/332010engFritzsch, HaraldThe gluonic decay of the b quark and the $\eta '$ mesonParticle Physics - PhenomenologyThe inclusive decay of B-mesons into eta' + 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 + 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.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.The observed inclusive decay of B -mesons into η ′ + X is interpred 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 + 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.hep-ph/9708348CERN-TH-97-200LMU-08-97CERN-TH-97-200LMU-97-8oai:cds.cern.ch:3320101997-08-15
spellingShingle Particle Physics - Phenomenology
Fritzsch, Harald
The gluonic decay of the b quark and the $\eta '$ meson
title The gluonic decay of the b quark and the $\eta '$ meson
title_full The gluonic decay of the b quark and the $\eta '$ meson
title_fullStr The gluonic decay of the b quark and the $\eta '$ meson
title_full_unstemmed The gluonic decay of the b quark and the $\eta '$ meson
title_short The gluonic decay of the b quark and the $\eta '$ meson
title_sort gluonic decay of the b quark and the $\eta '$ meson
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(97)01213-6
http://cds.cern.ch/record/332010
work_keys_str_mv AT fritzschharald thegluonicdecayofthebquarkandtheetameson
AT fritzschharald gluonicdecayofthebquarkandtheetameson

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