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
期刊:
影响因子:
5
通讯作者:
Jian-Rong Zhang;Guo-Feng Chen
Jian-Rong Zhang;Guo-Feng Chen
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Jian-Rong Zhang;Guo-Feng Chen

文献摘要

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假设新观测到的共振结构X(1910),X(2200),X(2350)分别为$\omega\omega$,$\omega\phi$,$\phi\phi$分子态,我们在QCD求和规则的框架下计算了它们的质量值。计算结果为:$\omega\omega$态为1.97\pm0.17 {GeV}$,$\omega\phi$态为2.07\pm0.21 {GeV}$,$\phi\phi$态为2.18\pm0.29 {GeV}$,分别与X(1910),X(2200),X(2350)的实验值相吻合.这支持了X(1910)、X(2200)和X(2350)可能分别是$\omega\omega$、$\omega\phi$和$\phi\phi$候选分子的说法。
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.