Isospin Violation in ${\bf B\to ππ}$ Decays
| dc.creator | Gardner, S. | |
| dc.date | 1999-06-06 | |
| dc.date.accessioned | 2026-07-07T04:07:18Z | |
| dc.date.available | 2026-07-07T04:07:18Z | |
| dc.description | An isospin analysis of $B\to ππ$ decays yields $\sin 2α$, where $α$ is the usual CKM angle $α\equiv {\rm arg} [-V_{td} V_{tb}^\ast/(V_{ud}V_{ub}^\ast)]$ without hadronic uncertainty if isospin is a perfect symmetry. Yet isospin symmetry is broken not only by electroweak effects but also by the $u$ and $d$ quark mass difference --- the latter drives $π^0-η,η'$ mixing and converts the isospin-perfect triangle relation between the $B\to ππ$ amplitudes to a quadrilateral. The error incurred in $\sin 2α$ through the neglect of the resulting isospin-violating effects can be significant, particularly if $\sin 2α$ is small. | |
| dc.description | 7 pages, REVTeX, epsf, 1 eps figure, talk at DPF'99 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9906269 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9906269 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49095 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Isospin Violation in ${\bf B\to ππ}$ Decays | |
| dc.type | text |