We study the fully-strange tetraquark states with the exotic quantum numbers $J^{ PC} = 0^{ +-}$ and $2^{ +-}$. We construct their corresponding diquark-antidiquark interpolating currents, and apply the QCD sum rule method to calculate both their diagonal and off-diagonal correlation functions. The obtained results are used to construct some mixing currents that are nearly non-correlated, from which we extract the masses of the lowest-lying states to be $M_{ 0^{ +-}} = 2.45^{ +0.33}_{ -0.44}$ GeV and $M_{ 2^{ +-}} = 3.07^{ +0.25}_{ -0.33}$ GeV. We apply the Fierz rearrangement to transform the diquark-antidiquark currents to be the combinations of meson-meson currents, and the obtained Fierz identities indicate that these two states may be searched for in the $P$-wave $\phi(1020) f_0(1710)/\phi(1020) f_2^\prime(1525) (\to \phi K \bar K / \phi \pi \pi)$ channels.
Categories: hep-ph