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Title: Production of 4He and 4He‾ in Pb–Pb collisions at √sNN=2.76 TeV at the LHC

Results on the production of 4He and 4He nuclei in Pb–Pb collisions at √sNN=2.76TeV in the rapidity range |y|<1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0–10% central events are found to be dN/dy4He=(0.8±0.4(stat)±0.3(syst))×10−6 and dN/dy4He=(1.1 ±0.4(stat) ±0.2(syst)) ×10−6, respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (Tchem=156 MeV) as for light hadrons. The measured ratio of 4He‾/4He is 1.4 ±0.8(stat) ±0.5(syst).
Authors:
 [1] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ;  [3]
  1. University of Panjab, India
  2. ORNL
  3. ALICE Collaboration
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Published Article
Journal Name:
Nuclear Physics A
Additional Journal Information:
Journal Volume: 971; Journal Issue: n/a
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
OSTI Identifier:
1437810
Alternate Identifier(s):
OSTI ID: 1481669

Aggarwal, M. M., Cormier, Thomas M., Read Jr, Kenneth F., Stankus, Paul W., and Collaboration, ALICE. Production of 4He and 4He‾ in Pb–Pb collisions at √sNN=2.76 TeV at the LHC. United States: N. p., Web. doi:10.1016/j.nuclphysa.2017.12.004.
Aggarwal, M. M., Cormier, Thomas M., Read Jr, Kenneth F., Stankus, Paul W., & Collaboration, ALICE. Production of 4He and 4He‾ in Pb–Pb collisions at √sNN=2.76 TeV at the LHC. United States. doi:10.1016/j.nuclphysa.2017.12.004.
Aggarwal, M. M., Cormier, Thomas M., Read Jr, Kenneth F., Stankus, Paul W., and Collaboration, ALICE. 2017. "Production of 4He and 4He‾ in Pb–Pb collisions at √sNN=2.76 TeV at the LHC". United States. doi:10.1016/j.nuclphysa.2017.12.004.
@article{osti_1437810,
title = {Production of 4He and 4He‾ in Pb–Pb collisions at √sNN=2.76 TeV at the LHC},
author = {Aggarwal, M. M. and Cormier, Thomas M. and Read Jr, Kenneth F. and Stankus, Paul W. and Collaboration, ALICE},
abstractNote = {Results on the production of 4He and 4He nuclei in Pb–Pb collisions at √sNN=2.76TeV in the rapidity range |y|<1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0–10% central events are found to be dN/dy4He=(0.8±0.4(stat)±0.3(syst))×10−6 and dN/dy4He=(1.1 ±0.4(stat) ±0.2(syst)) ×10−6, respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (Tchem=156 MeV) as for light hadrons. The measured ratio of 4He‾/4He is 1.4 ±0.8(stat) ±0.5(syst).},
doi = {10.1016/j.nuclphysa.2017.12.004},
journal = {Nuclear Physics A},
number = n/a,
volume = 971,
place = {United States},
year = {2017},
month = {12}
}