Figure 8

Functional dependence of the coincidence counts \({\bar{R}}_{{\rm{BP}}}({\tau }_{1},{\tau }_{2})\) of Eq. (44) in terms of τ2 for a fixed value of τ1 and different values of the asymmetry parameter \({\eta }_{{{\bf{B}}}_{1}{{\bf{B}}}_{2}}\).