Title: Light Nuclei Productions at RHIC and LHC 

Speaker: Dr. ZHAO Wenbin (Central China Normal University) 

Time: 15:00pm, Nov.19 (Thursday), 2020 

Place: Room 911, Building 5 

Abstract:  

Light nuclei are the delicate probes of ultra-relativistic heavy ion collisions. Their binding energies are much smaller than the temperatures of QGP fireballs. Studying the light nuclei productions will help us to understand the nucleon emission source, the nucleosynthesis mechanism as well as the density fluctuations related to the critical point or first-order phase transition in heavy-ion collisions.  In this talk, I will firstly briefly talk about the different production mechanisms of light clusters in LHC and RHIC energies. In particular, I will present our recent work about the beam energy dependence of the light nuclei productions at RHIC Beam Energy Scan region. Then, I will also talk about the collective flow of deuterons and helium-3 at LHC and their sensitivities to the phase-space distributions of protons and nucleons at kinetic freeze-out. Our nucleon coalescence model calculations provide the solid baseline predictions for the yields of light nuclei in the search for the possible QCD critical points at beam energy scan. Our coalescence model calculations, together with the proper phase-space distributions of nucleons, also supports the picture that light nuclei might be produced through the coalescence of protons and neutrons in relativistic heavy ion collisions at RHIC and LHC.