Constraints on $γ$ and Strong Phases from $B\toπK$ Decays
| dc.creator | Buras, Andrzej J. | |
| dc.creator | Fleischer, Robert | |
| dc.date | 2000-08-29 | |
| dc.date.accessioned | 2026-07-07T03:42:23Z | |
| dc.date.available | 2026-07-07T03:42:23Z | |
| dc.description | As we pointed out recently, the neutral decays $B_d\toπ^\mp K^\pm$ and $B_d\toπ^0K$ may provide non-trivial bounds on the CKM angle $γ$. Here we reconsider this approach in the light of recent CLEO data, which look very interesting. In particular, the results for the corresponding CP-averaged branching ratios are in favour of strong constraints on $γ$, where the second quadrant is preferred. Such a situation would be in conflict with the standard analysis of the unitarity triangle. Moreover, constraints on a CP-conserving strong phase $δ_n$ are in favour of a negative value of $\cosδ_n$, which would be in conflict with the factorization expectation. In addition, there seems to be an interesting discrepancy with the bounds that are implied by the charged $B\toπK$ system: whereas these decays favour a range for $γ$ that is similar to that of the neutral modes, they point towards a positive value of $\cosδ_c$, which would be in conflict with the expectation of equal signs for $\cosδ_n$ and $\cosδ_c$. | |
| dc.description | 5 pages, LaTeX, 2 figures. Talk given by R. Fleischer at ICHEP 2000, Osaka, Japan, 27 July - 2 August 2000. To appear in the Proceedings | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0008298 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0008298 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/39886 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on $γ$ and Strong Phases from $B\toπK$ Decays | |
| dc.type | text |