Observation of the resonant character of the $Z(4430{)}^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +697

Resonant structures in $B^0\to {\psi }^{\prime }{\pi }^{-}{K}^{+}$ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using $pp$ collision data corresponding to $3f{\mathrm{b}}^{-1}$…