Updated Measurement of the CKM Angle alpha Using B0->rho+rho- Decays

Details Updated Measurement of the CKM Angle alpha Using B0->rho+rho- Decays Updated Measurement of the CKM Angle alpha Using B0->rho+rho- Decays

2006-07-28

arxiv.org/abs/hep-ex/0607098v2

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

We present results from an analysis of B0->rho+rho- using 316fb^-1 of Y(4S) -> B0B0bar decays observed with the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure the B0->rho+rho- branching fraction, longitudinal polarization fraction fL, and the CP-violating parameters S_LONG and C_LONG: B(B0->rho+rho-) = (23.5 +/- 2.2 [stat] +/- 4.1 [syst]) * 10^-6, fL = 0.977 +/- 0.024 [stat] +0.015/-0.013 [syst] S_LONG = -0.19 +/- 0.21 [stat] +0.05/-0.07 [syst] C_LONG = -0.07 +/- 0.15 [stat] +/- 0.06 [syst] Using an isospin analysis of B->rhorho decays we determine the angle alpha of the unitarity triangle. One of the two solutions, alpha = [74, 117] degrees at 68% CL, is compatible with the standard model. All results presented here are preliminary.

Affiliated with

Also associated with

No associations

Rating

Updated Measurement of the CKM Angle alpha Using B0->rho+rho- 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 Updated Measurement of the CKM Angle alpha Using B0->rho+rho- Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Updated Measurement of the CKM Angle alpha Using B0->rho+rho- Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-365442