ExHIC-p workshop on polarization phenomena in nuclear collisions

5F (Institute of Physics, Academia Sinica, Taipei, Taiwan)


Institute of Physics, Academia Sinica, Taipei, Taiwan

No. 128, Sec. 2, Academia Rd., Nangang Dist., Taipei City 115201, Taiwan (R.O.C.)
Di-Lun Yang (Academia Sinica)


Recent measurements of spin polarization and spin alignment of hadrons in relativistic heavy ion collisions have made polarization phenomena and related issues one of most intriguing topics in high energy nuclear physics. In particular, the unexpectedly large spin alignment of vector mesons with collision-energy and flavor dependence pose severe challenges to theoretical explanations but also new opportunities to probe strong-interaction physics beyond subatomic swirls in quark gluon plasmas. This workshop is devoted to gathering experts, both inside and outside the field, to exchange ideas and methods to resolve the current tension between theory and experiment and discuss future developments. Several novel topics including polarization phenomena of  heavy flavor, internal spin structure of hadrons, polarization transport in low-energy nuclear collisions and small systems along with conventional issues such as dynamical spin polarization and alignment of light flavor will be addressed.  


Organizers :
           Philipp Gubler (JAEA)
           Koichi Hattori (Zhejiang Univ.)
           Xu-Guang Huang (Fudan Univ.)
           Su Houng Lee (Yonsei Univ.)
           Di-Lun Yang (Academia Sinica)

Registration deadline: Jan 28, 2024
    • 9:30 AM
      Registration (coffee & free discussion)
    • 1
      Speaker: Di-Lun Yang
    • 2
      STAR overview (chair: Che-Ming Ko)
      Speaker: Aihong Tang
    • 11:30 AM
      Lunch break
    • 3
      Recent experimental results at the LHC on polarization and spin alignment (chair : Kazuya Aoki)
      Speaker: Sanghoon Lim
    • 4
      Overview on spin transport theories in HIC (online talk, chair : Aihong Tang)
      Speaker: Qun Wang
    • 3:30 PM
      Coffee break
    • 5
      Global spin alignment of vector mesons in heavy ion collisions (online talk, chair : Shu Lin)
      Speaker: Xin-Li Sheng
    • 6
      Spin alignment of vector mesons by the color fields in the glasma (chair : Shu Lin)
      Speaker: Avdhesh Kumar
    • 7
      Speaker: Xu-Guang Huang
    • 6:00 PM
    • 10:00 AM
      coffee & free discussion
    • 8
      Heavy quarkonium production and polarization in small collision systems (chair : Hirotsugu Fujii)
      Speaker: Kazuhiro Watanabe
    • 11:30 AM
      Lunch break
    • 9
      Quantum mechanical description of heavy quark transport (chair : Yasuki Tachibana)
      Speaker: Yukinao Akamatsu
    • 2:30 PM
      Coffee break
    • 10
      Jpsi polarization in nuclear collisions from CGC perspective (chair : Kazuhiro Watanabe)
      Speaker: Hirotsugu Fujii
    • 11
      Dynamical Core-Corona Initialization Model for High Energy Nuclear Collisions (chair : Kazuhiro Watanabe)
      Speaker: Yasuki Tachibana
    • 12
      Speaker: Koichi Hattori
    • 10:00 AM
      coffee & free discussion
    • 13
      Overview on transport simulations of vector mesons (chair : Qun Wang)
      Speaker: Lucia Oliva
    • 11:30 AM
      Lunch break
    • 14
      Experimental study of in-medium spectral change of vector mesons and its polarization dependence at J-PARC (chair : Sanghoon Lim)
      Speaker: Kazuya Aoki
    • 15
      Spin-1 quarkonia in a rotating frame and their spin contents (chair : Sanghoon Lim)
      Speaker: HyungJoo Kim
    • 2:30 PM
      Coffee break
    • 16
      Problems in causality and stability analysis for spin hydrodynamics and the new stability and causality criteria (online talk, chair : Giorgio Torrieri)
      Speaker: Shi Pu
    • 17
      Timescales of spin transport (chair : Giorgio Torrieri)
      Speaker: David Wagner
    • 18
      Speaker: Philipp Gubler
    • 6:00 PM
    • 10:00 AM
      coffee & free discussion
    • 19
      Spin 1 mesons as a probe of spin-vorticity non-equilibrium (chair : Lucia Oliva)
      Speaker: Giorgio Torrieri
    • 20
      Spin dynamics of the phi meson in pA reactions probed at KEK and J-PARC (chair : Lucia Oliva)
      Speaker: Philipp Gubler
    • 11:30 AM
      Lunch break
    • 21
      Hadronic effects on Lambda polarization in relativistic heavy ion collisions (chair : Shi Pu)
      Speaker: Che-Ming Ko
    • 22
      Spin polarization within perturbative calculations (chair : Shi Pu)
      Speaker: Shanshan Cao
    • 2:30 PM
      Coffee break
    • 23
      J/psi spin alignment from polarized damping rate (chair : Yukinao Akamatsu)
      Speaker: Shu Lin
    • 24
      The effects of self-energies in spin polarization and spin alignment (online talk, chair : Yukinao Akamatsu)
      Speaker: Shuo Fang
    • 25
      Discussion and closing
      Speaker: Su Houng Lee