Measurement of the Direct CP Asymmetry in b -> s gamma Decays
| dc.creator | Aubert, B. | |
| dc.creator | Collaboration, BABAR | |
| dc.date | 2004-03-23 | |
| dc.date.accessioned | 2026-07-07T11:57:49Z | |
| dc.date.available | 2026-07-07T11:57:49Z | |
| dc.description | We describe a measurement of the direct CP asymmetry between inclusive b -> s gamma and bbar -> sbar gamma decays. This asymmetry is expected to be less than 0.01 in the Standard Model, but could be enhanced up to about 0.10 by new physics contributions. We use a sample of 89 million BB pairs recorded with the BaBar detector at PEP-II, from which we reconstruct a set of 12 exclusive b -> s gamma final states containing one charged or neutral kaon and one to three pions. We measure an asymmetry of A_CP(b -> s gamma) = 0.025 +/- 0.050(stat.) +/- 0.015(syst.), corresponding to an allowed range of -0.06 < A_CP(b -> s gamma) < +0.11 at 90% confidence level. | |
| dc.description | 7 pages, 2 postscript figures, submitted to Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0403035 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0403035 | |
| dc.identifier | Phys.Rev.Lett.93:021804,2004 | |
| dc.identifier | doi:10.1103/PhysRevLett.93.021804 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206016 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the Direct CP Asymmetry in b -> s gamma Decays | |
| dc.type | text |