Monday, April 30, 2012

1112.5976 (Chun-Yu Cui et al.)

Can X(3872) be a $J^{P}=2^{-}$ tetraquark state?    [PDF]

Chun-Yu Cui, Yong-Lu Liu, Guo-Bin Zhang, Ming-Qiu Huang
In this article, we test the nature of X(3872), which is assumed to be a P-wave $[cq]$-scalar-diquark $[\bar{c}\bar{q}]$-axial-vector-antidiquark tetraquark state with $J^{P}=2^{-}$. The interpolating current representing the $J^{P}=2^{-}$ state is proposed. Technically, contributions of the operators up to dimension six are included in the operator product expansion (OPE). The mass obtained for such state is $m_{2^{-}}=(4.38\pm 0.15) GeV$. We conclude that it is impossible to describe the X(3872) structure as $J^{P}=2^{-}$ tetraquark state.
View original: http://arxiv.org/abs/1112.5976

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