Uncertainties in the Determination of $|V_{cb}|$
| dc.creator | Neubert, Matthias | |
| dc.date | 1995-05-05 | |
| dc.date.accessioned | 2026-07-07T03:57:35Z | |
| dc.date.available | 2026-07-07T03:57:35Z | |
| dc.description | I discuss the theoretical uncertainties in the extraction of $|\,V_{cb}|$ from semilep\-to\-nic decays of $B$ mesons, taking into account the most recent theoretical developments. The main sources of uncertainty are identified both for the exclusive decay mode $B\to D^*\ell\,\barν$ and for the inclusive channel $B\to X\,\ell\,\barν$. From an analysis of the available experimental data, I obtain $|\,V_{cb}|_{\rm excl} = 0.041\pm 0.003_{\rm exp}\pm 0.002_{\rm th}$ from the exclusive mode, and $|\,V_{cb}|_{\rm incl} = 0.040\pm 0.001_{\rm exp}\pm 0.005_{\rm th}$ from the inclusive mode. I also give a prediction for the slope of the form factor ${\cal{F}}(w)$ at zero recoil, which is $\widehat\varrho^2=0.8\pm 0.3$. | |
| dc.description | Proceedings of 1995 Moriond Conference on Electroweak Interactions and Unified Theories, 11 pages, 3 figures available as uu-encoded postscript files | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9505238 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9505238 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/45488 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Uncertainties in the Determination of $|V_{cb}|$ | |
| dc.type | text |