Measurement of the Decay Amplitudes of B⁰ → J/ψK^*0 and B_s⁰ → J/ψφ Decays

Authors

• T. Affolder, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California
• Kenneth A. Bloom, University of Nebraska-LincolnFollow
• Collider Detector at Fermilab Collaboration

Document Type

Article

Date of this Version

11-27-2000

Comments

Published by American Physical Society. Phys. Rev. Lett. 85, 4668 (2000). http://prl.aps.org. Copyright © 2000 American Physical Society. Permission to use.

Abstract

An angular analysis of B⁰ → J/ψK^*0and B_s⁰ → 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 40B_s⁰candidates 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 B_s⁰ 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 B_s⁰ decays.