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# Measurement of the angular and lifetime parameters of the decays $B_{d}^{0}\to J/\psi K^{*0}$ and $B_{s}^{0}\to J/\psi\phi$

Abstract : We present measurements of the linear polarization amplitudes and the strong relative phases that describe the flavor-untagged decays $B_{d}^{0}\to J/\psi K^{*0}$ and $B_{s}^{0}\to J/\psi\phi$ in the transversity basis. We also measure the mean lifetime $\bar{\tau}_{s}$ of the $B_{s}^{0}$ mass eigenstates and the lifetime ratio $\bar{\tau}_{s}/\tau_{d}$. 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 $B_{d}^{0}\to J/\psi K^{*0}$ decay.
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Journal articles
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http://hal.in2p3.fr/in2p3-00326158
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, October 2, 2008 - 8:42:25 AM
Last modification on : Tuesday, December 1, 2020 - 4:46:02 PM

### Citation

V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, et al.. Measurement of the angular and lifetime parameters of the decays $B_{d}^{0}\to J/\psi K^{*0}$ and $B_{s}^{0}\to J/\psi\phi$. Physical Review Letters, American Physical Society, 2009, 102, pp.032001. ⟨10.1103/PhysRevLett.102.032001⟩. ⟨in2p3-00326158⟩

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