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arXiv · 0704.1856

Axial Vector Tetraquark with Two s-quarks

Yoshiko Kanada-En'yo·Osamu Morimatsu·Tetsuo Nishikawa
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Abstract

Possibility of an axial vector isoscalar tetraquark $ud\bar{s}\bar{s}$ is discussed. If a $f_1$ meson in the mass region $1.4-1.5$ GeV consists of four quarks $ns\bar{n}\bar{s}$, the mass of the isoscalar $ud\bar{s}\bar{s}$($\vartheta^+$-meson) state with $J^P=1^+$ is expected to be lower than that of the $f_1$ meson. Within a flux-tube quark model, a possible resonant state of $ud\bar{s}\bar{s}(J^{P}=1^{+})$ is suggested to appear at $\sim$ 1.4 GeV with the width ${\cal{O}}(20\sim 50)$ MeV. We propose that the $\vartheta^+$-meson is the good candidate for the tetraquark search, which would be observed in the $K^+K^+π^-$ decay channel.

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Yoshiko Kanada-En'yo, Osamu Morimatsu, Tetsuo Nishikawa. 2007-04-14. Axial Vector Tetraquark with Two s-quarks. https://doi.org/10.1143/ptps.168.194

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