Modeling new XYZ states at JPAC

[摘要] The observation of the unexpected XYZP resonances has challenged the usual heavy quarkonium framework. One of the most studied exotic states, the X(3872), happens to be copiously produced in high-energy hadron collisions. We discuss how this large prompt production cross-section, together with the comparison with light nuclei production data, disfavors a loosely-bound molecule interpretation, and calls for a new interpretation for the exotic hadron resonances. We also present the research of the Joint Physics Analysis Center in Hadron Spectroscopy.

[发布机构] Theory Center, Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News; VA; 23606, United States^1

[关键词] Bound molecules;Exotic state;Hadron spectroscopy;High-energy hadrons;Light nuclei;Physics analysis;Production cross section;Production data