Vector and axial-vector charmoniumlike states

After constructing all the tetraquark interpolating currents with J(PC) = 1(-+), 1(--), 1(++) and 1(+-) in a systematic way, we investigate the two-point correlation functions to extract the masses of the charmoniumlike states with QCD sum rule. For the 1(--) qc (q) over bar(c) over bar charmoniumlike state, m(X) = 4.6 similar to 4.7 GeV, which implies a possible tetraquark interpretation for the state Y(4660). The masses for both the 1(++) qc (q) over bar(c) over bar and sc (s) over bar(c) over bar charmoniumlike states are around 4.0 similar to 4.2 GeV, which are slightly above the mass of X(3872). For the 1(-+) and 1(+-) qc (q) over bar(c) over bar charmoniumlike states, the extracted masses are around 4.5 similar to 4.7 GeV and 4.0 similar to 4.2 GeV, respectively. As a by-product, the bottomoniumlike states are also studied. We also discuss the possible decay modes and experimental search of the charmoniumlike states.