Document Type
Article
Publication Date
12-22-2011
Abstract
We present the first measurement of polarization and CP-violating asymmetries in a Bs0 decay into two light vector mesons, B s0→φφ, and an improved determination of its branching ratio using 295 decays reconstructed in a data sample corresponding to 2.9fb -1 of integrated luminosity collected by the CDF experiment at the Fermilab Tevatron collider. The fraction of longitudinal polarization is determined to be f L=0.348±0.041(stat)±0.021(syst), and the branching ratio B(Bs0→φφ)=[2.32±0.18(stat)±0. 82(syst)]×10 -5. Asymmetries of decay angle distributions sensitive to CP violation are measured to be A u=-0.007±0. 064(stat)±0.018(syst) and A v=-0.120±0.064(stat) ±0.016(syst). © 2011 American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Recommended Citation
Aaltonen, T., Álvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Appel, J., Apresyan, A., Arisawa, T., Artikov, A., Asaadi, J., Ashmanskas, W., Auerbach, B., Aurisano, A., Azfar, F., Badgett, W., Barbaro-Galtieri, A., Barnes, V., Barnett, B., Barria, P., Bartos, P., Bauce, M., Bauer, G., Bedeschi, F., Beecher, D., & Behari, S. (2011). Measurement of polarization and search for CP violation in B s0→φφ decays. Physical Review Letters, 107 (26) https://doi.org/10.1103/PhysRevLett.107.261802