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

ALICE Collaboration

doi:10.1016/j.nuclphysa.2017.12.004

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

ALICE Collaboration

Subatomic Physics

Variable Energy Cyclotron Centre
Czech Academy of Sciences
Lund University
Panjab University
CERN
Polytechnic University of Turin
Indian Institute of Technology, Bombay
Korea Institute of Science and Technology Information
Yale University
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Universidade Estadual de Campinas
Russian Research Centre Kurchatov Institute
National Institute for Nuclear Physics
Universidad Nacional Autónoma de México
COMSATS University Islamabad
Enrico Fermi Center
University of Bologna
NASU - Bogolyubov Institute for Theoretical Physics
University of Bergen
Nikhef
National Institute for Subatomic Physics
Research Division
Division of Experimental High Energy Physics
Université Grenoble Alpes
University of Tsukuba

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Results on the production of ⁴He and He‾4 nuclei in Pb–Pb collisions at √s_NN=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/dy_He4=(0.8±0.4(stat)±0.3(syst))×10⁻⁶ and dN/dy_He‾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 (T_chem=156MeV) as for light hadrons. The measured ratio of He‾4/⁴He is 1.4±0.8(stat)±0.5(syst).

Original language	English
Pages (from-to)	1-20
Number of pages	20
Journal	Nuclear Physics A
Volume	971
DOIs	https://doi.org/10.1016/j.nuclphysa.2017.12.004
Publication status	Published - 1 Mar 2018

Keywords

ALICE detector
Anti-nuclei
LHC
Pb–Pb collisions

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10.1016/j.nuclphysa.2017.12.004

1-s2.0-S0375947417304839-mainFinal published version, 709 KBLicence: CC BY

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@article{359f3a2fed894523aec4392a42c663d8,

title = "Production of 4He and He‾4 in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC",

abstract = "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).",

keywords = "ALICE detector, Anti-nuclei, LHC, Pb–Pb collisions",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and J. Adolfsson and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and \{Alfaro Molina\}, R. and Y. Ali and A. Alici and A. Alkin and J. Alme and C. Bedda and D. Caffarri and A. Caliva and P. Christakoglou and A. Grelli and S. Jaelani and Keijdener, \{D. L.D.\} and Z. Khabanova and Kuijer, \{P. G.\} and E. Leogrande and Lodato, \{D. F.\} and J. Margutti and A. Mischke and N. Mohammadi and Mohanty, \{A. P.\} and G. Nooren and T. Peitzmann and T. Richert and Sas, \{M. H.P.\} and G. Simatovic and Snellings, \{R. J.M.\} and Trzeciak, \{B. A.\} and \{Van Der Maarel\}, J. and \{van Leeuwen\}, M. and Veen, \{A. M.\} and S. Vigolo and H. Wang and H. Yokoyama and C. Zhang",

year = "2018",

month = mar,

day = "1",

doi = "10.1016/j.nuclphysa.2017.12.004",

language = "English",

volume = "971",

pages = "1--20",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Production of 4He and He‾4 in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Bedda, C.

AU - Caffarri, D.

AU - Caliva, A.

AU - Christakoglou, P.

AU - Grelli, A.

AU - Jaelani, S.

AU - Keijdener, D. L.D.

AU - Khabanova, Z.

AU - Kuijer, P. G.

AU - Leogrande, E.

AU - Lodato, D. F.

AU - Margutti, J.

AU - Mischke, A.

AU - Mohammadi, N.

AU - Mohanty, A. P.

AU - Nooren, G.

AU - Peitzmann, T.

AU - Richert, T.

AU - Sas, M. H.P.

AU - Simatovic, G.

AU - Snellings, R. J.M.

AU - Trzeciak, B. A.

AU - Van Der Maarel, J.

AU - van Leeuwen, M.

AU - Veen, A. M.

AU - Vigolo, S.

AU - Wang, H.

AU - Yokoyama, H.

AU - Zhang, C.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - 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).

AB - 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).

KW - ALICE detector

KW - Anti-nuclei

KW - LHC

KW - Pb–Pb collisions

UR - https://www.scopus.com/pages/publications/85053489326

U2 - 10.1016/j.nuclphysa.2017.12.004

DO - 10.1016/j.nuclphysa.2017.12.004

M3 - Article

AN - SCOPUS:85053489326

SN - 0375-9474

VL - 971

SP - 1

EP - 20

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

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

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Keywords

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