| Abstract: | An analysis of the decay B0 -> J/psi K*(892)0 is presented using data,
corresponding to an integrated luminosity of 1.0fb^-1, collected in pp
collisions at a centre-of-mass energy of 7TeV with the LHCb detector. The
polarisation amplitudes and the corresponding phases are measured to be
|A_{parallel}|^2 = 0.227 +- 0.004 (stat.) +- 0.011 (syst.),
|A_{perp}|^2 = 0.201 +- 0.004 (stat.) +- 0.008 (syst.),
delta_{parallel} [rad] = -2.94 +- 0.02 (stat.) +- 0.03 (syst.),
delta_{perp} [rad] = 2.94 +- 0.02 (stat.) +- 0.02 (syst.).
Comparing B0 -> J/psi K*(892)0 and ar{B}0 -> J/psi ar{K}*(892)0 decays,
no evidence for direct CP violation is found. |
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