Measurement of polarization amplitudes and CP asymmetries in B[superscript 0] → ϕK[superscript *](892)[superscript 0]
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Aaij-2014-Measurement of polarization amp.pdf
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Author(s)
Counts, Ian Thomas Hunt
Williams, Michael
Ilten, Philip J
Date Issued
May 2014
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aaij, R., A. Abba, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. “Measurement of Polarization Amplitudes and CP Asymmetries in B[superscript 0] → ϕK[superscript *](892)[superscript 0].” J. High Energ. Phys. 2014, no. 5 (May 2014). © CERN, for the benefit of the LHCb Collaboration
Version
Final published version
Abstract
An angular analysis of the decay B [superscript 0] → ϕK [superscript *](892)[superscript 0] is reported based on a pp collision data sample, corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected at a centre-of-mass energy of √s = 7 TeV with the LHCb detector. The P-wave amplitudes and phases are measured with a greater precision than by previous experiments, and confirm about equal amounts of longitudinal and transverse polarization. The S-wave K [superscript +] π [superscript −] and K [superscript +] K [superscript −] contributions are taken into account and found to be significant. A comparison of the B [superscript 0] → ϕK [superscript *](892)[superscript 0] and [bar over B] [superscript 0] → ϕ[bar over K] [superscript *](892)[superscript 0] results shows no evidence for direct CP violation in the rate asymmetry, in the triple-product asymmetries or in the polarization amplitudes and phases.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/JHEP05(2014)069
