2013/07/31 by LHCb collaboration, R. Aaij, C. Abellan Beteta +632 · 1 citation
Physics and Astronomy · #hep-ex
paper · pdf · doi:10.1103/physrevd.88.052002
published as Phys. Rev. D 88, 052002 (2013) · 22 pages, 7 figures
arxiv created 2013/09/05 · arxiv updated 2016/03/27
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∥|2 = 0.227 +- 0.004 (stat.) +- 0.011 (syst.), |A⊥|2 = 0.201 +- 0.004 (stat.) +- 0.008 (syst.), δ∥ [rad] = -2.94 +- 0.02 (stat.) +- 0.03 (syst.), δ⊥ [rad] = 2.94 +- 0.02 (stat.) +- 0.02 (syst.). Comparing B0 -> J/psi K*(892)0 and B0 -> J/psi K*(892)0 decays, no evidence for direct CP violation is found.