摘要
We investigate theηKˉK^?three-body system in order to look for possible IG(JPC)=0+(1?+)exotic states in the framework of the fixed-center approximation of the Faddeev equation.We assume the scattering ofηon a clusterized system KˉK^?,which is known to generate f1(1285),or a Kˉin a clusterized systemηK^?,which is shown to generate K1(1270).In the case ofη-(KˉK^?)f1(1285)scattering,we find evidence of a bound state IG(JPC)=0+(1?+)below theηf1(1285)threshold with a mass of around 1700 MeV and a width of about 180 MeV.Considering Kˉ-(ηK^?)K1(1270)scattering,we obtain a bound state I(JP)=0(1?)just below the KˉK1(1270)threshold with a mass of around 1680 MeV and a width of about 160 MeV.
作者
张旭
谢聚军
Xu Zhang;Ju-Jun Xie(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Sciences and Technology,University of Chinese Academy of Sciences,Beijing 101408,China;School of Physics and Microelectronics,Zhengzhou University,Zhengzhou,Henan 450001,China)
基金
Partly supported by the National Natural Science Foundation of China(11735003,1191101015,11475227)
the Youth Innovation Promotion Association CAS(2016367)。
