New molecular candidates: X(1910), X(2200), and X(2350)
New molecular candidates: X(1910), X(2200), and X(2350)
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DOI:
10.1103/physrevd.86.116006
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发表时间:
2012-03
影响因子:
5
通讯作者:
Jian-Rong Zhang;Guo-Feng Chen
中科院分区:
文献类型:
--
作者:
Jian-Rong Zhang;Guo-Feng Chen
Assuming the newly observed resonant structures X(1910), X(2200), and X(2350) as $\omega\omega$, $\omega\phi$, and $\phi\phi$ 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 $\omega\omega$ state, $2.07\pm0.21 {GeV}$ for $\omega\phi$ state, and $2.18\pm0.29 {GeV}$ for $\phi\phi$ 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 $\omega\omega$, $\omega\phi$, and $\phi\phi$ molecular candidates respectively.