Measurement of deuteron spectra and elliptic flow in Pb-Pb collisions at √s_NN=2.76 TeV at the LHC

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Acharya, S, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, N, Ahn, SU et al (show 1028 more authors) , Aiola, S, Akindinov, A, Alam, SN, Alba, JLB, Albuquerque, DSD, Aleksandrov, D, Alessandro, B, Alfaro Molina, R, Alici, A, Alkin, A, Alme, J, Alt, T, Altenkamper, L, Altsybeev, I, Alves Garcia Prado, C, Andrei, C, Andreou, D, Andrews, HA, Andronic, A, Anguelov, V, Anson, C, Anticic, T, Antinori, F, Antonioli, P, Anwar, R, Aphecetche, L, Appelshaeuser, H, Arcelli, S, Arnaldi, R, Arnold, OW, Arsene, IC, Arslandok, M, Audurier, B, Augustinus, A, Averbeck, R, Azmi, MD, Badala, A, Baek, YW, Bagnasco, S, Bailhache, R, Bala, R, Baldisseri, A, Ball, M, Baral, RC, Barbano, AM, Barbera, R, Barile, F, Barioglio, L, Barnafoldi, GG, Barnby, LS, Barret, V, Bartalini, P, Barth, K, Bartsch, E, Basile, M, Bastid, N, Basu, S, Bathen, B, Batigne, G, Batyunya, B, Batzing, PC, Bearden, IG, Beck, H, Bedda, C, Behera, NK, Belikov, I, Bellini, F, Bello 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Zhu, X, Zichichi, A, Zimmermann, A, Zimmermann, MB, Zinovjev, G, Zmeskal, J and Zou, S (2017) Measurement of deuteron spectra and elliptic flow in Pb-Pb collisions at √s_NN=2.76 TeV at the LHC EUROPEAN PHYSICAL JOURNAL C, 77 (10). 658-. ISSN 1434-6044, 1434-6052

Text Measurement of deuteron spectra and elliptic flow in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC.pdf - Author Accepted Manuscript Download (846kB)

Abstract

The transverse momentum (p<inf>T</inf>) spectra and elliptic flow coefficient (v<inf>2</inf>) of deuterons and anti-deuterons at mid-rapidity (| y| < 0.5) are measured with the ALICE detector at the LHC in Pb–Pb collisions at sNN = 2.76 TeV. The measurement of the p<inf>T</inf>spectra of (anti-)deuterons is done up to 8 GeV/ c in 0–10% centrality class and up to 6 GeV/ c in 10–20% and 20–40% centrality classes. The v<inf>2</inf>is measured in the 0.8 < p<inf>T</inf><5 GeV/ c interval and in six different centrality intervals (0–5, 5–10, 10–20, 20–30, 30–40 and 40–50%) using the scalar product technique. Measured π^±, K^± and p+p ¯ transverse-momentum spectra and v<inf>2</inf>are used to predict the deuteron p<inf>T</inf>spectra and v<inf>2</inf>within the Blast-Wave model. The predictions are able to reproduce the v<inf>2</inf> coefficient in the measured p<inf>T</inf>range and the transverse-momentum spectra for p<inf>T</inf>> 1.8 GeV/ c within the experimental uncertainties. The measurement of the coalescence parameter B<inf>2</inf>is performed, showing a p<inf>T</inf> dependence in contrast with the simplest coalescence model, which fails to reproduce also the measured v<inf>2</inf> coefficient. In addition, the coalescence parameter B<inf>2</inf> and the elliptic flow coefficient in the 20–40% centrality interval are compared with the AMPT model which is able, in its version without string melting, to reproduce the measured v<inf>2</inf>(p<inf>T</inf>) and the B<inf>2</inf>(p<inf>T</inf>) trend.

Item Type:	Article
Uncontrolled Keywords:	5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	06 Nov 2017 07:36
Last Modified:	16 Jun 2026 09:20
DOI:	10.1140/epjc/s10052-017-5222-x
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3011515
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