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arXiv · 1203.0700

New molecular candidates: X(1910), X(2200), and X(2350)

Jian-Rong Zhang·Guo-Feng Chen
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Abstract

Assuming the newly observed resonant structures X(1910), X(2200), and X(2350) as $ωω$, $ωϕ$, and $ϕϕ$ molecular states respectively, we compute their mass values in the framework of QCD sum rules. The numerical results are $1.97\pm0.17 {GeV}$ for $ωω$ state, $2.07\pm0.21 {GeV}$ for $ωϕ$ state, and $2.18\pm0.29 {GeV}$ for $ϕϕ$ state, which coincide with the experimental values of X(1910), X(2200), and X(2350), respectively. This supports the statement that X(1910), X(2200), and X(2350) could be $ωω$, $ωϕ$, and $ϕϕ$ molecular candidates respectively.

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Jian-Rong Zhang, Guo-Feng Chen. 2012-11-20. New molecular candidates: X(1910), X(2200), and X(2350). https://doi.org/10.1103/physrevd.86.116006

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