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Title: Beam-energy dependence of the production of light nuclei in Au + Au collisions

Abstract

We study in the coalescence model the collision energy dependence of (anti-)deuteron and (anti- )triton production in the most central Au+Au collisions at $$\sqrt{s_{NN}} $$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV. The needed phase-space distribution of nucleons at the kinetic freeze-out is generated from a new 3D hybrid dynamical model (iEBE-MUSIC) by using a smooth crossover equation of state (EoS) without a QCD critical point. Our model calculations predict that the coalescence parameters of (anti-)deuteron (B2(d) and B2($$\bar{d}$$)) decrease monotonically as the collision energy increases, and the light nuclei yield ratio NtNp/$$Nd^{2}_{d}$$ remains approximately a constant with respect to the collision energy. These calculated observables fail to reproduce the non-monotonic behavior of the corresponding data from the STAR Collaboration. Without including any effects of the critical point in our model, our results serve as the baseline predictions for the yields of light nuclei in the search for the possible QCD critical points from the experimental beam energy scan of heavy ion collisions.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [4]
  1. Peking Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China); Central China Normal Univ., Wuhan, Hubei (China)
  2. Wayne State Univ., Detroit, MI (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
  3. Texas A & M Univ., College Station, TX (United States)
  4. Peking Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
Publication Date:
Research Org.:
Wayne State Univ., Detroit, MI (United States); Texas A & M Univ., College Station, TX (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Welch Foundation
OSTI Identifier:
1851798
Grant/Contract Number:  
SC0013460; SC0015266; AC02-05CH11231; PHY-2012922; A-1358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Zhao, Wenbin, Shen, Chun, Ko, Che Ming, Liu, Quansheng, and Song, Huichao. Beam-energy dependence of the production of light nuclei in Au + Au collisions. United States: N. p., 2020. Web. doi:10.1103/physrevc.102.044912.
Zhao, Wenbin, Shen, Chun, Ko, Che Ming, Liu, Quansheng, & Song, Huichao. Beam-energy dependence of the production of light nuclei in Au + Au collisions. United States. https://doi.org/10.1103/physrevc.102.044912
Zhao, Wenbin, Shen, Chun, Ko, Che Ming, Liu, Quansheng, and Song, Huichao. Thu . "Beam-energy dependence of the production of light nuclei in Au + Au collisions". United States. https://doi.org/10.1103/physrevc.102.044912. https://www.osti.gov/servlets/purl/1851798.
@article{osti_1851798,
title = {Beam-energy dependence of the production of light nuclei in Au + Au collisions},
author = {Zhao, Wenbin and Shen, Chun and Ko, Che Ming and Liu, Quansheng and Song, Huichao},
abstractNote = {We study in the coalescence model the collision energy dependence of (anti-)deuteron and (anti- )triton production in the most central Au+Au collisions at $\sqrt{s_{NN}} $ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV. The needed phase-space distribution of nucleons at the kinetic freeze-out is generated from a new 3D hybrid dynamical model (iEBE-MUSIC) by using a smooth crossover equation of state (EoS) without a QCD critical point. Our model calculations predict that the coalescence parameters of (anti-)deuteron (B2(d) and B2($\bar{d}$)) decrease monotonically as the collision energy increases, and the light nuclei yield ratio NtNp/$Nd^{2}_{d}$ remains approximately a constant with respect to the collision energy. These calculated observables fail to reproduce the non-monotonic behavior of the corresponding data from the STAR Collaboration. Without including any effects of the critical point in our model, our results serve as the baseline predictions for the yields of light nuclei in the search for the possible QCD critical points from the experimental beam energy scan of heavy ion collisions.},
doi = {10.1103/physrevc.102.044912},
journal = {Physical Review. C},
number = 4,
volume = 102,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2020},
month = {Thu Oct 01 00:00:00 EDT 2020}
}

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