BaBar: sin(2beta+gamma)
High Energy Physics - Experiment
2007-05-23 v1
Abstract
The time-dependent CP asymmetries in fully reconstructed B0 --> D(*)pi/rho decays (new preliminary result), and in partially reconstructed B0 --> D(*)pi decays, are measured with the BaBar detector at the PEP-II asymmetric B factory at SLAC, using 232 million Y(4S) -> BB decays. We combine the above results and, using other measurements and theoretical assumptions, we interpret them in terms of the angles of the unitarity triangle describing the Cabibbo-Kobayashi-Maskawa matrix. We find |sin(2beta+gamma)|>0.64(0.42) at 68%(90%) confidence level using a frequentistic approach and |2beta+gamma|=(90 +- 43)o using a Bayesian approach.
Cite
@article{arxiv.hep-ex/0601018,
title = {BaBar: sin(2beta+gamma)},
author = {C. Voena},
journal= {arXiv preprint arXiv:hep-ex/0601018},
year = {2007}
}
Comments
4 pages, 1 encapsulated postscript figure, contributed to the Proceedings of EPS2005