  Starting from a Skyrme interaction with tensor terms, the $\beta$-decay rates
of $^{52}$Ca have been studied within a microscopic model including the $2p-2h$
configuration effects. We observe a redistribution of the strength of
Gamow-Teller transitions due to the $2p-2h$ fragmentation. Taking into account
this effect results in a satisfactory description of the neutron emission
probability of the $\beta$-decay in $^{52}$Ca.
