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

ALICE Collaboration

Relativistic Nuclear Physics

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83 Scopus citations

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
State	Published - Mar 2018

Keywords

ALICE detector
Anti-nuclei
LHC
Pb–Pb collisions

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10.1016/j.nuclphysa.2017.12.004

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@article{c25f10c1007943c3af989e00f56b0e96,

title = "Production of 4He and He‾4 in Pb–Pb collisions at sNN=2.76TeV 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 T. Alt and L. Altenkamper and I. Altsybeev and \{Alves Garcia Prado\}, C. and C. Andrei and D. Andreou and Andrews, \{H. A.\} and A. Andronic and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, \{O. W.\} and Arsene, \{I. C.\} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and F. Bock and Read, \{K. F.\} and Schmidt, \{N. V.\}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = mar,

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

language = "English",

volume = "971",

pages = "1--20",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

}

TY - JOUR

T1 - Production of 4He and He‾4 in Pb–Pb collisions at sNN=2.76TeV 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 - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bock, F.

AU - Read, K. F.

AU - Schmidt, N. V.

PY - 2018/3

Y1 - 2018/3

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=2.76TeV at the LHC

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Keywords

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