arXiv:1103.1700·v1·Nuclear Theory
Exotics from Heavy Ion Collisions
ExHIC Collaboration: Akira Ohnishi (1) · Sungtae Cho (2) · Takenori Furumoto (1,3) · Tetsuo Hyodo (4) · Daisuke Jido (1) · Che Ming Ko (5) · Su Houng Lee (2,1) · Marina Nielsen (6) · Takayasu Sekihara (1,7) · Shigehiro Yasui (8) · Koichi Yazaki (1,3) ((1) Kyoto U., Yukawa Inst., Kyoto, (2) IPAP, Seoul, (3) Nishina Ctr., RIKEN, (4) Tokyo Inst. Tech., (5) Texas A-M, Cyclotron Inst. & Texas A-M, (6) Sao Paulo U., (7) Kyoto U., (8) KEK, Tsukuba.)
Abstract
Discriminating hadronic molecular and multi-quark states is a long standing problem in hadronic physics. We propose here to utilize relativistic heavy ion collisions to resolve this problem, as exotic hadron yields are expected to be strongly affected by their structures. Using the coalescence model, we find that the exotic hadron yield relative to the statistical model result is typically an order of magnitude smaller for a compact multi-quark state, and larger by a factor of two or more for a loosely bound hadronic molecule. We further find that some of the newly proposed heavy exotic states could be produced and realistically measured at RHIC and LHC.
Comments: Presented at International Conference on the Structure of Baryons (Baryons '10), Osaka, Japan, Dec.7-11, 2010