Comment on $V_{ub}$ from Exclusive Semileptonic B and D Decays
| dc.creator | Ligeti, Zoltan | |
| dc.creator | Stewart, Iain W. | |
| dc.creator | Wise, Mark B. | |
| dc.date | 1997-11-06 | |
| dc.date | 1998-03-10 | |
| dc.date.accessioned | 2026-07-07T11:09:42Z | |
| dc.date.available | 2026-07-07T11:09:42Z | |
| dc.description | The prospects for determining $|V_{ub}|$ from exclusive B semileptonic decay are discussed. The double ratio of form factors $(f^{B\toρ}/f^{B\to K^*})/ (f^{D\toρ}/f^{D\to K^*})$ is calculated using chiral perturbation theory. Its deviation from unity due to contributions that are non-analytic in the symmetry breaking parameters is very small. Combining experimental data obtainable from (B->rho l nu), (B->K* l l) and (D->rho l nu) can lead to a model independent determination of $|V_{ub}|$ with an uncertainty from theory of about 10%. | |
| dc.description | 14 pages, 3 figs, minor typos corrected, to appear in Phys. Lett. B | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9711248 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9711248 | |
| dc.identifier | Phys.Lett.B420:359-366,1998 | |
| dc.identifier | doi:10.1016/S0370-2693(97)01518-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/190561 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Comment on $V_{ub}$ from Exclusive Semileptonic B and D Decays | |
| dc.type | text |