Implications for CP asymmetries of improved data on $B \to K^0 π^0$
| dc.creator | Gronau, Michael | |
| dc.creator | Rosner, Jonathan L. | |
| dc.date | 2008-07-21 | |
| dc.date | 2008-08-04 | |
| dc.date.accessioned | 2026-07-07T11:44:56Z | |
| dc.date.available | 2026-07-07T11:44:56Z | |
| dc.description | The decay $B^0 \to K^0 π^0$, dominated by a $b \to s$ penguin amplitude, holds the potential for exhibiting new physics in this amplitude. In the pure QCD penguin limit one expects $\ckp = 0$ and $\skp = \sin 2 β$ for the coefficients of $\cos Δm t$ and $\sin Δm t$ in the time-dependent CP asymmetry. Small non-penguin contributions lead to corrections to these expressions which are calculated in terms of isospin-related $B\to Kπ$ rates and asymmetries, using information about strong phases from experiment. We study the prospects for incisive tests of the Standard Model through examination of these corrections. We update a prediction $\ckp=0.15\pm 0.04$, pointing out the sensitivity of a prediction $\skp\approx 1$ to the measured branching ratio for $B^0\to K^0π^0$ and to other observables. | |
| dc.description | Note added, to be published in Physics Letters B | |
| dc.identifier | https://arxiv.org/abs/0807.3080 | |
| dc.identifier | http://arxiv.org/abs/0807.3080 | |
| dc.identifier | Phys.Lett.B666:467-471,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.08.004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/201728 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Implications for CP asymmetries of improved data on $B \to K^0 π^0$ | |
| dc.type | text |