We discuss the exotic hadron structure and hadron-hadron interactions in view of heavy-ion collisions. First, we demonstrate that a hadronic molecule with a large spatial size would be produced more abundantly in the coalescence model compared with the statistical model result. Secondly, we constrain the ΛΛ interaction by using recently measured ΛΛ correlation data. We find that the RHIC-STAR data favor the ΛΛ scattering parameters in the range 1/a0 ≤ - 0.8 fm -1 and reff ≥ 3 fm.
Bibliographical noteFunding Information:
The authors would like to thank A. Gal, J. Schaffner-Bielich, J. Aichelin, and A. Sandorfi for useful suggestions. This work is supported in part by the Grants-in-Aid for Scientific Research from JSPS (Nos. (B) 23340067, (B) 24340054, (C) 24540271), by the Grants-in-Aid for Scientific Research on Innovative Areas from MEXT (No. 2404: 24105001, 24105008), by the Yukawa International Program for Quark–Hadron Sciences, and by the Grant-in-Aid for the global COE program “The Next Generation of Physics, Spun from Universality and Emergence” from MEXT.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics