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.
Measurement of the polarization amplitudes in B^{0}→J/ψK^{*}(892)^{0} decays
BALDINI, Wander;BOZZI, Concezio;FIORE, Marco;SAVRIE', Mauro;
2013
Abstract
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.File in questo prodotto:
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