Search for $Z_{s1}^{+}$ and $Z_{s2}^{+}$ strangeonium-like structures

Abstract

Theoretically, it has been presumed from an effective Lagrangian calculation that there could exist two charged strangeonium-like molecular states $Z_{s1}^{+}$ and $Z_{s2}^{+}$, with $K{\bar{K}}^{\ast }$ and $K^{\ast }{\bar{K}}^{\ast }$ configurations respectively. In the framework of QCD sum rules, we predict that masses of $Z_{s1}^{+}$ ($K{\bar{K}}^{\ast }$) and $Z_{s2}^{+}$ ($K^{\ast }{\bar{K}}^{\ast }$) are $1.85\pm 0.14GeV$ and $2.02\pm 0.15GeV$ respectively, which are both above their respective two meson thresholds. We suggest to put in practice the search for these two charged strangeonium-like structures in future experiments.

7 pages, 4 eps figures; the version accepted for publication in PRD. arXiv admin note: text overlap with arXiv:1203.0700

References in corpus (15)

• The Spin Structure of the Nucleon
• X(3872) and Other Possible Heavy Molecular States
• Hadronic molecule structure of the Y(3940) and Y(4140)
• Analysis of Y(2175) as a tetraquark state with QCD sum rules
• Is Z^+(4430) a loosely bound molecular state?
• Could $Z_b(10610)$ be a $B^{\ast }\bar{B}$ molecular state?
• $Z^{+}(4430)$ as a $D_1^{\prime }{D}^{\ast }$ ($D_1{D}^{\ast }$) molecular state
• The Y(2175) State in the QCD Sum Rule
• $\{Q\bar{q}\}\{{\bar{Q}}^{{(}^{\prime })}q\}$ molecular states
• Possible Molecular States of $D_s^{\ast }{\bar{D}}_s^{\ast }$ System and Y(4140)
• The I^G J^{PC}=1^- 1^{-+} Tetraquark States
• Diquark and light four-quark states
• The I^G J^{PC}=0^+ 1^{-+} Tetraquark State
• Two charged strangeonium-like structures observable in the $Y(2175)\to \varphi (1020){\pi }^{+}{\pi }^{-}$ process
• Could $Y_b(10890)$ be the P-wave $[bq][\bar{b}\bar{q}]$ tetraquark state?

Cited by in corpus (10)

• Improved QCD sum rule study of $Z_c(3900)$ as a $\bar{D}{D}^{\ast }$ molecular state
• $S$-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
• New molecular candidates: X(1910), X(2200), and X(2350)
• Mass spectra of dimesonic states in light flavour sector
• Chiral Structure of Scalar and Pseudoscalar Mesons