Research Papers in Physics and Astronomy


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Published by American Physical Society. Phys. Rev. Lett. 85, 4668 (2000). Copyright © 2000 American Physical Society. Permission to use.


An angular analysis of B0JK*0and Bs0J/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.

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