Measurement of the angular and lifetime parameters of the decays $B_d^0\to J/\psi K^{\ast 0}$ and $B_s^0\to J/\psi \varphi$

Abstract

We present measurements of the linear polarization amplitudes and the strong relative phases that describe the flavor-untagged decays $B_d^0\to J/\psi K^{\ast 0}$ and $B_s^0\to J/\psi \varphi$ 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 $B_d^0\to J/\psi K^{\ast 0}$ decay.

7 pages, 4 figures. Submitted to Phys. Rev. Lett

References in corpus (2)

• Measurement of $\boldmath {B_s^0}$ mixing parameters from the flavor-tagged decay
• Lifetime Difference and CP-Violating Phase in the B_s^0 System

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