Production of 4He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

S. Acharya; D. Adamova; J Adolfsson; MM. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; S.U. Ahn; A. Akindinov; M. Al-Turany; SN Alam; DSD Albuquerque; D. Aleksandrov; B Alessandro; Rafael A. Molina; Yusuf Ali; A. Alici; A. Alkin; J. Alme.; Ian Bearden; Lais Ozelin de Lima Pimentel; Christian Alexander Bourjau; Ante Bilandzic; Marek Chojnacki; Jens Jørgen Gaardhøje; Freja Thoresen; Børge Svane Nielsen; bsm989 bsm989; Vojtech Pacik; You Zhou; Vytautas Vislavicius; Katarina Gajdosova; rtc312 rtc312

doi:10.1016/j.nuclphysa.2017.12.004

Production of ⁴He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

S. Acharya, D. Adamova, J Adolfsson, MM. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, S.U. Ahn, A. Akindinov, M. Al-Turany, SN Alam, DSD Albuquerque, D. Aleksandrov, B Alessandro, Rafael A. Molina, Yusuf Ali, A. Alici, A. Alkin, J. Alme.Ian Bearden, Lais Ozelin de Lima Pimentel, Christian Alexander Bourjau, Ante Bilandzic, Marek Chojnacki, Jens Jørgen Gaardhøje, Freja Thoresen, Børge Svane Nielsen, bsm989 bsm989, Vojtech Pacik, You Zhou, Vytautas Vislavicius, Katarina Gajdosova, rtc312 rtc312

Experimental Particle Physics

48 Citations (Scopus)

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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
Journal	Nuclear Physics A
Volume	971
Pages (from-to)	1-20
Number of pages	20
ISSN	0375-9474
DOIs	https://doi.org/10.1016/j.nuclphysa.2017.12.004
Publication status	Published - 1 Mar 2018

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Acharya, S., Adamova, D., Adolfsson, J., Aggarwal, MM., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S. U., Akindinov, A., Al-Turany, M., Alam, SN., Albuquerque, DSD., Aleksandrov, D., Alessandro, B., Molina, R. A., Ali, Y., Alici, A., Alkin, A., ... rtc312, R. (2018). Production of ⁴He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC. Nuclear Physics A, 971, 1-20. https://doi.org/10.1016/j.nuclphysa.2017.12.004

Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Akindinov, A, Al-Turany, M, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Molina, RA, Ali, Y, Alici, A, Alkin, A, Alme., J, Bearden, I, Pimentel, LODL, Bourjau, CA, Bilandzic, A, Chojnacki, M, Gaardhøje, JJ, Thoresen, F, Nielsen, BS , bsm989, B, Pacik, V, Zhou, Y, Vislavicius, V, Gajdosova, K & rtc312, R 2018, 'Production of ⁴He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC', Nuclear Physics A, vol. 971, pp. 1-20. https://doi.org/10.1016/j.nuclphysa.2017.12.004

@article{04423e29aee64659add9d3abc62c33bb,

title = "Production of 4He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=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).",

author = "S. Acharya and D. Adamova and J Adolfsson and MM. Aggarwal and G.A. Rinella and Maria Agnello and N. Agrawal and Z. Ahammed and S.U. Ahn and A. Akindinov and M. Al-Turany and SN Alam and DSD Albuquerque and D. Aleksandrov and B Alessandro and Molina, {Rafael A.} and Yusuf Ali and A. Alici and A. Alkin and J. Alme. and Ian Bearden and Pimentel, {Lais Ozelin de Lima} and Bourjau, {Christian Alexander} and Ante Bilandzic and Marek Chojnacki and Gaardh{\o}je, {Jens J{\o}rgen} and Freja Thoresen and Nielsen, {B{\o}rge Svane} and bsm989 bsm989 and Vojtech Pacik and You Zhou and Vytautas Vislavicius and Katarina Gajdosova and rtc312 rtc312",

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month = mar,

day = "1",

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

language = "English",

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journal = "Nuclear Physics A",

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TY - JOUR

T1 - Production of 4He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

AU - Acharya, S.

AU - Adamova, D.

AU - Adolfsson, J

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S.U.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, SN

AU - Albuquerque, DSD

AU - Aleksandrov, D.

AU - Alessandro, B

AU - Molina, Rafael A.

AU - Ali, Yusuf

AU - Alici, A.

AU - Alkin, A.

AU - Alme., J.

AU - Bearden, Ian

AU - Pimentel, Lais Ozelin de Lima

AU - Bourjau, Christian Alexander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Gaardhøje, Jens Jørgen

AU - Thoresen, Freja

AU - Nielsen, Børge Svane

AU - bsm989, bsm989

AU - Pacik, Vojtech

AU - Zhou, You

AU - Vislavicius, Vytautas

AU - Gajdosova, Katarina

AU - rtc312, rtc312

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).

U2 - 10.1016/j.nuclphysa.2017.12.004

DO - 10.1016/j.nuclphysa.2017.12.004

M3 - Journal article

SN - 0375-9474

VL - 971

SP - 1

EP - 20

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

Production of 4He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

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Production of ⁴He and (4)<(He) over bar> in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC