Speaker
Shigehiro Yasui
(Tokyo Institute of Technology)
Description
Exotic hadrons are one of the most interesting topics recently studied
in the hadron physics as their structure are related to the
fundamental ingredients in QCD.
Moreover, the production of light nuclei and excited states became
realistic in heavy ion collisions. Hence, we will discuss the
production of exotic hadrons with strange, charm and bottom quarks in
heavy ion collisions, and how the production rates can be used to
discriminate between compact multiquark configuration from hadronic
molecular configurations [1,2].
Specifically, we consider the coalescence model and the statistical
model, which have been successful for explaining the productions of
normal hadrons, to calculate the production yields of exotic hadrons.
We give a detailed discussions for applications of the coalescence
model to resonant states by including finite decay widths. We present
that the production yields are sensitive to structures of exotic
hadrons, namely compact multi-quark states or extended hadronic
molecule states. As specific examples, we investigate the production
of scalar mesons, $\Lambda$(1405), dibaryons, and $D_s$ mesons. We
furthermore investigate charmonium-like and bottomonium-like states
called $X$, $Y$, $Z$, which have been recently reported in several
accelerator facilities, Belle, BaBar, BESS, LHCb and so on.
[1] S Cho et al. [ExHIC Collaboration], Phys. Rev. Lett. 106, 212001 (2011).
[2] S. Cho et al. [ExHIC Collaboration], Phys. Rev. C84, 064910 (2011).
| On behalf of collaboration: | [Other] |
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Author
Shigehiro Yasui
(Tokyo Institute of Technology)
Co-authors
Prof.
Akira Ohnishi
(Kyoto University)
Prof.
Che-Ming Ko
(Texas A&M University)
Prof.
Daisuke Jido
(Tokyo Metropolitan University)
Dr
Kenji Morita
(Kyoto University)
Dr
Koichi Yazaki
(RIKEN)
Prof.
Marina Nielsen
(Universidade de São paulo)
Prof.
Su Houng Lee
(Yonsei University)
Prof.
Sungtae Cho
(Kangwon National University)
Dr
Taesoo Song
(FIAS Frankfurt Institute for Advanced Studies)
Dr
Takayasu Sekihara
(RCNP, Osaka University)
Dr
Takenori Furumoto
(YITP, Kyoto University)
Prof.
Tetsuo Hyodo
(YITP, Kyoto University)
