Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session 3WLB: Physics at High Baryon Density: Search for QCD Critical Point in High-Energy Nuclear Collisions IIInvited Workshop
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Chair: Shin Ichi Esumi Room: Hilton Waikoloa Village Kona 5 |
Monday, November 27, 2023 11:00AM - 11:30AM |
3WLB.00001: Methods and Results on Conserved Charge Fluctuations from RHIC-BES and FXT Invited Speaker: Toshihiro Nonaka One of the ultimate goals in heavy-ion collision experiments is to understand the QCD phase structure and the nature of the phase transition. At RHIC, cumulants up to the sixth-order of the net-particle multiplicity distributions have been measured for the Beam Energy Scan (BES) and fixed-target (FXT) program (2010-2017), from which some interesting hints on the phase structure have been obtained. |
Monday, November 27, 2023 11:30AM - 12:00PM |
3WLB.00002: The Compressed Baryonic Matter (CBM) Experiment at FAIR: Status and Plans Invited Speaker: Norbert Herrmann The Compressed Baryonic Matter (CBM) experiment is one of the major scientific pillars of the Facility for Antiproton and Ion Research (FAIR), which is expected to become operational in 2028-29. The goal of CBM is to explore the QCD phase diagram in the region of high baryon densities using nucleus-nucleus collisions in the energy range sqrt(s_NN) = 2.9 - 4.9 GeV. CBM will be capable of utilizing peak interaction rates of up to 10 MHz and an advanced triggerless data acquisition scheme, by which access is enabled to rare physics probes not studied before. This contribution will give an overview of the CBM physics goals among which the equation-of-state of dense nuclear matter, the possible phase transition from hadronic to partonic phase, and chiral symmetry restoration play major roles. The CBM physics performance in terms of (multi-) strange particle production, dilepton spectroscopy and collective flow will be discussed with focus on sensitivity to criticality and first order phase transitions. Plans to extend the physics program to proton induced reactions will be presented as well. In addition, the status of the detector and its sub-systems construction and commissioning will be described. This includes the measured performance of pre-series detectors in FAIR Phase-0 experiments, especially in the currently operated demonstrator mCBM at SIS18. |
Monday, November 27, 2023 12:00PM - 12:30PM |
3WLB.00003: Directed and elliptic flow using neutron rich Sn + Sn collisions with 270MeV/u Invited Speaker: Mizuki Kurata-NIshimura Rapidity dependence of directed flow v1 and elliptic flow v2 were analyzed for various particles, including proton, deuteron, triton, 3He, and 4He. |
Monday, November 27, 2023 12:30PM - 1:00PM |
3WLB.00004: Experimental overview on the QCD critical point search and nuclear matter phase diagram Invited Speaker: Xin Dong Understanding the QCD phase structure and nuclear matter properties at high baryon density regions remains one central focus of heavy-ion programs worldwide. In this talk, I will review experimental measurements from low energy heavy ion experiments, with an emphasis on recent results from the Beam Energy Scan phase-II (BES-II) program at RHIC. These measurements include identified particle yield and their collectivity including hadrons and nuclei containing strange flavor to benchmark freezeout thermal properties and to gain insight of the Equation-of-State, dilepton yield towards the understanding of medium chiral properties and phase transition nature, as well as baryon correlations and fluctuations in order to search for the critical point induced signal etc. Further experimental perspectives from the BES-II results will be discussed. In the end, I will briefly discuss physics programs and discovery potentials at future facilities aiming for QCD phase structure at high density regions. |
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