Study of semileptonic decay of
${\bar{B}}_{s}^{0} \rightarrow \phi {l}^{+}{l}^{-}$
in QCD sum rule
Ying-Quan Peng,Mao-Zhi Yang
Figure 2.
Selected stability regions of
${M}_{1}^{2}$
and
${M}_{2}^{2}$
.
