Measurement of Polarization and Search for CP Violation in Bs0→ϕϕ Decays
Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.; Bauer, Gerry P; Makhoul, Khaldoun
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We present the first measurement of polarization and CP-violating asymmetries in a B[subscript s][superscript 0] decay into two light vector mesons, B[subscript s][superscript 0]→ϕϕ, and an improved determination of its branching ratio using 295 decays reconstructed in a data sample corresponding to 2.9 fb[superscript -1] of integrated luminosity collected by the CDF experiment at the Fermilab Tevatron collider. The fraction of longitudinal polarization is determined to be f[subscript L]=0.348±0.041(stat)±0.021(syst), and the branching ratio B(B[subscript s][superscript 0]→ϕϕ)=[2.32±0.18(stat)±0.82(syst)]×10[superscript -5]. Asymmetries of decay angle distributions sensitive to CP violation are measured to be A[subscript u]=-0.007±0.064(stat)±0.018(syst) and A[subscript v]=-0.120±0.064(stat)±0.016(syst).
Date issued
2011-12Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Aaltonen, T. et al. “Measurement of Polarization and Search for CP Violation in B_{s}^{0}→ϕϕ Decays.” Physical Review Letters 107.26 (2011): n. pag. Web. 24 Feb. 2012. © 2011 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114