Measurement of the Decay Amplitudes of \u3ci\u3eB\u3c/i\u3e\u3csup\u3e0\u3c/sup\u3e → \u3ci\u3eJ\u3c/i\u3e/ψ\u3ci\u3eK\u3c/i\u3e\u3csup\u3e*0\u3c/sup\u3e and \u3ci\u3eB\u3c/i\u3e\u3csub\u3es\u3c/sub\u3e\u3csup\u3e0\u3c/sup\u3e → \u3ci\u3eJ\u3c/i\u3e/ψφ Decays

An angular analysis of B0 → J/ψK*0and Bs0 → J/ψφ has been used to determine the decay amplitudes with parity-even longitudinal (A0) and transverse (A║) polarization and parity-odd transverse (A┴) polarization. The measurements are based on 190 B0 and 40Bs0candidates obtained from 89 pb-1 of p̅p collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with |A0|2= 0.59 ± 0.06 ± 0.01 for B0 and |A0|2 = 0.61 ± 0.14 ± 0.02 for Bs0 decays. The parity-odd amplitude is found to be small with |A┴|2 =0.13-0.09+0.12 ±0.06 for B0 and|A┴|2= 0.23 ± 0.19 ± 0.04 for Bs0 decays