Axial Currents of Virtual Charm in Light Quark Processes
| dc.creator | Araki, F. | |
| dc.creator | Musakhanov, M. | |
| dc.creator | Toki, H. | |
| dc.date | 1998-08-10 | |
| dc.date | 1998-08-25 | |
| dc.date.accessioned | 2026-07-07T04:04:30Z | |
| dc.date.available | 2026-07-07T04:04:30Z | |
| dc.description | The systematic investigations of the role of the virtual charm axial currents in the decay of $B$-mesons to $η'$ $K$ and the spin structure of the nucleon are performed. We reduce the divergence of the virtual charm axial current to a specific gluon operator. Since this operator receives the main contribution from topologically nontrivial components of the QCD vacuum, we rederive the Dyakonov-Petrov Effective Action, based on the instanton QCD vacuum model. This action is applied to the calculations of the coupling of $η'$ to the charm axial current and found $f_{η'}^{(c)} (μ\simeq m_c) = - (12.3 \sim 18.4 {\rm MeV}), $ providing a possibility for the explanations of the recent experimental data on $B \to η' K$-decay. Analogous calculations of the virtual charm content of the nucleon spin leads to $Δc (μ\simeq m_c) = - (0.015 \sim 0.024),$ which is one order of magnitude smaller than the analogous contribution of the strange quark. | |
| dc.description | 26 pages, revtex, new references and PACS Codes added, minor corrections are made | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9808290 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9808290 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48122 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Axial Currents of Virtual Charm in Light Quark Processes | |
| dc.type | text |