Indications of the possible observation of the lowest-lying 1^{-+} QCD state

Abstract

We discuss properties of 1^{-+} exotic mesons within the framework of the QCD field-theoretic approach. We estimate the mass of the lowest-lying 1^{-+} exotic meson using renormalization-improved QCD sum rules, and find that the mass lies around $1.26\pm 0.15$ GeV, in good agreement with the ${\pi }_1(1400)$ data. This state should be expected in QCD. We find that the mass for the lowest-lying strange 1^{-+} meson is $1.31\pm 0.19$ GeV. Our result hints that the K^*(1410) may be the lowest-lying 1^{-+} nonet state.

arXiv comment6 pages, 3 figures; some typos corrected, Published version

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Cited by in corpus (6)

• The I^G J^{PC}=1^- 1^{-+} Tetraquark States
• 1^{-+} light exotic mesons in QCD
• The I^G J^{PC}=0^+ 1^{-+} Tetraquark State
• The Strong Decay Patterns of the $1^{-+}$ Exotic Hybrid Mesons
• The Decay Properties of the 1^{-+} Hybrid State
• $\rho$ Meson Decays of Heavy Hybrid Mesons