Y(2175): Distinguish hybrid state from higher quarkonium

The possibility of Y(2175) as a 2D13ss¯ meson is studied. We study the decay of 2D13ss¯ from both the P03 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 2D13ss¯ are very different. The experimental search of the decay modes KK, K∗K∗, K(1460)K, h1(1380)η is suggested to distinguish the two pictures. Measuring the K∗K∗ partial width ratios is crucial to discriminate the 2D13 from the 3S13ss¯ assignment.