Understanding B -->J/Ψϕin the Standard Model

Abstract

The rare decay ${\bar{B}}_d^0\to J/\psi \varphi$ can proceed in four distinct mechanisms: (i) production of the $\varphi$ via tri-gluon fusion, (ii) photoproduction of the $J/\psi$ or $\varphi$, (iii) final-state rescattering of $D_s^{(\ast )}{D}_s^{(\ast )}$ produced in the ${\bar{B}}_d$ decay to $J/\psi \varphi$, and (iv) production of the $\varphi$ via $\omega -\varphi$ mixing. In this work, we examine the contributions from photoproduction and final-state rescattering to ${\bar{B}}_d^0\to J/\psi \varphi$ and find that the corresponding branching ratios are of order $10^{-11}$ and $10^{-9}$, respectively. Hence, this decay is dominated by the $\omega -\varphi$ mixing effect.

8 pages, 3 figures, some typos are corrected, version for publish in PLB

References in corpus (4)

• The Dipion Mass Spectrum In e+e- Annihilation and tau Decay: A Dynamical (rho0, omega, phi) Mixing Approach
• B decays dominated by omega-phi mixing
• Small amplitude effects in $B^0\to D^{+}{D}^{-}$ and related decays
• Search for $B^0\to J/\psi \varphi$