Effects of attractive KK^bar and repulsive KK interactions in KKK^bar three-body resonance

Using the complex scaling method, we discuss the properties of the coupled-channel KKK^bar-Kpipi three-body resonance. This resonance can be interpreted as K(1460) resonance. Our model can explain not only its mass but also its large width by introducing the Kpipi channel and repulsive KK interaction. The relativistic kinematics is also essential. We will discuss the structure of the three-body resonance based on the strongly attractive KK^bar interactions and repulsive KK interactions.