  We study a polarized Fermi gas and demonstrate that Fano-Feshbach (FF)
resonances lead to the pairing of fermions and holes into long living massive
bosonic modes (bifermions and biholes), which can be viewed as signatures of a
first order quantum phase transition. These modes, which are neither
conventional Cooper pairs nor closed channel bosonic dimers, have a peculiar
dispersion relation and appear already in the weak coupling limit, i.e. for
large FF detunings. Our result is in accord with claims of Schunck \emph{et
al.} [cond-mat/0702066] that by stabilizing the normal state the population
imbalance still allows effect of s-wave fermionic pairing.
