Measurement of the Direct CP Asymmetry in b -> s gamma Decays

Details Measurement of the Direct CP Asymmetry in b -> s gamma Decays Measurement of the Direct CP Asymmetry in b -> s gamma Decays

2004-03-23

arxiv.org/abs/hep-ex/0403035v1

Phys.Rev.Lett.93:021804,2004

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 postscript figures, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.93.021804

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.

Affiliated with

Also associated with

No associations

Rating

Measurement of the Direct CP Asymmetry in b -> s gamma Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement of the Direct CP Asymmetry in b -> s gamma Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the Direct CP Asymmetry in b -> s gamma Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-678606