Production of 4He and 4He_ in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC
ALICE Collaboration. (2018). Production of 4He and 4He_ in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC. Nuclear Physics A, 971, 1-20. https://doi.org/10.1016/j.nuclphysa.2017.12.004
Julkaistu sarjassa
Nuclear Physics APäivämäärä
2018Tekijänoikeudet
© 2018 Published by Elsevier B.V. This is an open access article distributed under the terms of the Creative Commons License.
Results on the production of 4He and 4He nuclei in Pb–Pb collisions at √sNN = 2.76 TeV 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).
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