Sum rule for rate and CP asymmetry in $B^+\to K^+π^0$
| dc.creator | Gronau, Michael | |
| dc.creator | Rosner, Jonathan L. | |
| dc.date | 2006-10-18 | |
| dc.date | 2006-10-29 | |
| dc.date.accessioned | 2026-07-07T11:05:55Z | |
| dc.date.available | 2026-07-07T11:05:55Z | |
| dc.description | A sum rule relating the ratio $R_c = 2 Γ(B^+ \to K^+ π^0)/Γ(B^+ \to K^0 π^+)$ and the CP asymmetry $A_{CP}(B^+ \to K^+π^0)$ is proved to first order in the ratio of tree to penguin amplitudes. The sum rule explains why it is possible to have $R_c$ consistent with 1 together with a small CP asymmetry in $B^+ \to K^+ π^0$. The measured ratio $A_{CP}(B^+\to K^+π^0)/A_{CP}(B^0\to K^+π^-)$ rules out a small strong phase difference between a color-suppressed and a color-favored tree amplitude contributing to $B^+\to K^+π^0$ as favored by QCD factorization. | |
| dc.description | small correction | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0610227 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0610227 | |
| dc.identifier | Phys.Lett.B644:237-240,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2006.11.044 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189356 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Sum rule for rate and CP asymmetry in $B^+\to K^+π^0$ | |
| dc.type | text |