The Vector and Axial-Vector Charmonium-like States

Details The Vector and Axial-Vector Charmonium-like States The Vector and Axial-Vector Charmonium-like States

2010-10-17

arxiv.org/abs/1010.3397v2

Phys.Rev.D83:034010,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures and 6 tables

Scientific paper

10.1103/PhysRevD.83.034010

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 charmonium-like states with QCD sum rule. For the $1^{--}$ $qc\bar q\bar c$ charmonium-like state, $m_X=4.6\sim4.7$ GeV, which implies a possible tetraquark interpretation for the state Y(4660). The masses for both the $1^{++}$ $qc\bar q\bar c$ and $sc\bar s\bar c$ charmonium-like states are around $4.0\sim 4.2$ GeV, which are slightly above the mass of X(3872). For the $1^{-+}$ $qc\bar q\bar c$ charmonium-like state, the extracted mass is $4.5\sim 4.7$ GeV. We also discuss the possible decay modes and experimental search of the $1^{-+}$ charmonium-like states.

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