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

Abstract

Assuming the newly observed resonant structures X(1910), X(2200), and X(2350) as $\omega \omega$, $\omega \varphi$, and $\varphi \varphi$ molecular states respectively, we compute their mass values in the framework of QCD sum rules. The numerical results are $1.97\pm 0.17GeV$ for $\omega \omega$ state, $2.07\pm 0.21GeV$ for $\omega \varphi$ state, and $2.18\pm 0.29GeV$ for $\varphi \varphi$ 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 $\omega \omega$, $\omega \varphi$, and $\varphi \varphi$ molecular candidates respectively.

9 pages, 9 eps figures; the name of X(2000) changed to X(1910) according to the updated data of experiments; more references and discussions added; accepted for publication in PRD. arXiv admin note: substantial text overlap with arXiv:1211.2277, arXiv:1201.3412

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Cited by in corpus (10)

• Improved QCD sum rule study of $Z_c(3900)$ as a $\bar{D}{D}^{\ast }$ molecular state
• The mass spectra and decay properties of dimesonic states, using the Hellmann potential
• $S$-wave $D^{(\ast )}N$ molecular states: ${\Sigma }_c(2800)$ and ${\Lambda }_c(2940{)}^{+}$?
• An open charm tetraquark candidate: note on $X_0(2900)$
• Exploring a ${\Sigma }_c\bar{D}$ state: with focus on $P_c(4312{)}^{+}$
• Revisiting $D_{s0}^{\ast }(2317)$ as a $0^{+}$ tetraquark state from QCD sum rules
• Analysis of the scalar nonet mesons with the QCD sum rules
• Study of $X_c(3250)$ as a $D_0^{\ast }(2400)N$ molecular state
• Mass spectra of dimesonic states in light flavour sector
• Chiral Structure of Scalar and Pseudoscalar Mesons