Measurement of the polarization amplitudes in B0→J/ψK∗(892)0 decays

Article English OPEN
Back, J. J. ; Craik, Daniel ; Dossett, D. ; Gershon, T. J. ; Kreps, Michal ; Latham, Thomas ; Pilar, T. ; Poluektov, Anton ; Reid, Matthew M. ; Silva Coutinho, R. ; Williams, M. P. ; Whitehead, M. (Mark) ; HASH(0x561a137acd90) (2013)

An analysis of the decay B0→J/ψK*(892)0 is presented using data, corresponding to an integrated luminosity of 1.0  fb-1, collected in pp collisions at a center-of-mass energy of 7 TeV with the LHCb detector. The polarization 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), and δ⊥[rad]=2.94±0.02 (stat)±0.02 (syst). Comparing B0→J/ψK*(892)0 and B- 0→J/ψK- *(892)0 decays, no evidence for direct CP violation is found.
Share - Bookmark