Bounds on the CP Asymmetry in b --> sγ Decays
We have measured the CP asymmetry ACP≡[γ\(b-->sγ\)- γ\(b¯-->s¯γ\)]/ [γ\(b-->sγ\)+γ\(b¯-->s¯γ\)] to be ACP = \(-0.079+/-0.108+/-0.022\) \(1.0+/-0.030\), implying that, at 90% confidence level, ACP lies between -0.27 and +0.10. These limits rule out some extreme non-standard-model predictions, but are consistent with most, as well as with the standard model.
Physical Review Letters
- Pub Date:
- June 2001
- High Energy Physics - Experiment
- 11 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS