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Y(2175): Distinguish Hybrid State from Higher Quarkonium

Gui-Jun Ding·Mu-Lin Yan
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Abstract

The possibility of Y(2175) as a $2{^3D_1}$ $s\bar{s}$ meson is studied. We study the decay of $2{^3D_1}$ $s\bar{s}$ from both the $^3P_0$ model and the flux tube model, and the results are similar in the two models. We show that the decay patterns of $1^{--}$ strangeonium hybrid and $2{^3D_1}$ $s\bar{s}$ are very different. The experimental search of the decay modes $KK$, $K^{*}K^{*}$, $K(1460)K$, $h_1(1380)η$ is suggested to distinguish the two pictures. Measuring the $K^{*}K^{*}$ partial width ratios is crucial to discriminate the $2{^3D_1}$ from the $3{^3S_1}$ $s\bar{s}$ assignment.

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Gui-Jun Ding, Mu-Lin Yan. 2007-09-30. Y(2175): Distinguish Hybrid State from Higher Quarkonium. https://doi.org/10.1016/j.physletb.2007.10.020

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