Production of <SUP>4</SUP>He and <SUP>4</SUP><(He) over bar> in Pb-Pb collisions at √<i><SUP>S</SUP></i>NN=2.76 TeV at the LHC

Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Ajoi, S
et al (show 1003 more authors) (2018) Production of <SUP>4</SUP>He and <SUP>4</SUP><(He) over bar> in Pb-Pb collisions at √<i><SUP>S</SUP></i>NN=2.76 TeV at the LHC. NUCLEAR PHYSICS A, 971. pp. 1-20.

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Results on the production of 4He and He‾4 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/dyHe4=(0.8±0.4(stat)±0.3(syst))×10−6 and dN/dyHe‾4=(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=156MeV) as for light hadrons. The measured ratio of He‾4/4He is 1.4±0.8(stat)±0.5(syst).

Item Type: Article
Uncontrolled Keywords: Pb-Pb collisions, ALICE detector, LHC, Anti-nuclei
Depositing User: Symplectic Admin
Date Deposited: 25 Feb 2019 15:45
Last Modified: 13 Oct 2023 04:00
DOI: 10.1016/j.nuclphysa.2017.12.004
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