Measurement of polarization amplitudes and CP asymmetries in B[superscript 0] → ϕK[superscript *](892)[superscript 0]
Author(s)Counts, Ian Thomas Hunt; Ilten, Philip James; Williams, Michael
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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.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal of High Energy Physics
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
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