Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model
| dc.creator | Ball, Patricia | |
| dc.creator | Zwicky, Roman | |
| dc.date | 2006-09-05 | |
| dc.date | 2006-10-17 | |
| dc.date.accessioned | 2026-07-07T11:05:40Z | |
| dc.date.available | 2026-07-07T11:05:40Z | |
| dc.description | We calculate the dominant Standard Model contributions to the time-dependent CP asymmetry in B0->K*0 gamma, which is O(1/mb) in QCD factorisation. We find that, including all relevant hadronic effects, in particular from soft gluons, the asymmetry S is very small, S=-0.022\pm 0.015^{+0}_{-0.01}, and smaller than suggested recently from dimensional arguments in a 1/mb expansion. Our result implies that any significant deviation of the asymmetry from zero, and in particular a confirmation of the current experimental central value, S_{HFAG}=-0.28\pm 0.26, would constitute a clean signal for new physics. | |
| dc.description | 14 pages, 1 figure, discussions on further power corrections added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609037 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609037 | |
| dc.identifier | Phys.Lett.B642:478-486,2006 | |
| dc.identifier | doi:10.1016/j.physletb.2006.10.013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189274 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model | |
| dc.type | text |