Measurement of the Angular and Lifetime Parameters of the Decays B_d⁰ → J/ψK^*0 and B_s⁰ → J/φψ

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

1-23-2009

Comments

Published in PHYSICAL REVIEW LETTERS 102, 032001 (2009). Copyright © 2009 The American Physical Society. Used by permission.

Abstract

We present measurements of the linear polarization amplitudes and the strong relative phases that describe the flavor-untagged decays B_d⁰ → J/ψK⁺⁰ and B_s⁰ → J/ψφ in the transversity basis. We also measure the mean lifetime τ_s of the B_d⁰ mass eigenstates and the lifetime ratio τ_s/τ_d. The analyses are based on approximately 2.8 fb^-1 of data recorded with the D0 detector. From our measurements of the angular parameters we conclude that there is no evidence for a deviation from flavor SU(3) symmetry for these decays and that the factorization assumption is not valid for the i>B_d⁰ → J/ψK⁺⁰ decay.