Probe $Λ- \barΛ$ oscillation in $J/ψ\rightarrow Λ\,\barΛ$ decay at BES-III

We discuss the possible searching for the oscillation by coherent $Λ\barΛ$ production in $J/ψ\rightarrow Λ\barΛ$ decay process. The sensitivity of measurement of $Λ- \barΛ$ oscillation in the external field at BES-III experiment is considered. These considerations indicate an alternative way to probe the $ΔB =2$ amplitude in addition to neutron oscillation experiments. Both coherent and time-dependent information can be used to extract $Λ-\barΛ$ oscillation parameter. With one year's luminosity at BES-III, we can set an upper limit of $δm < 10^{-15}$ MeV at 90% confidence level, corresponding to about $10^{-6}$ s of $\Lam-\Lamb$ oscillation time.

No reviews yet.

No comments yet.