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Measurement of D0 , D+, D∗+ and D+ s production in Pb–Pb collisions at √sNN = 5.02 TeV

S Acharya M Bregant; Camila de Conti; Hermann Franz Degenhardt; Diogenes Domenicis Gimenez; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Caio Lagana Fernandes; Paula Fernanda Toledo Matuoka; Marcelo Gameiro Munhoz; Hugo Natal da Luz; Antonio Carlos Oliveira da Silva; Alexandre Alarcon do Passo Suaide; Henrique José Correia Zanoli

Journal of High Energy Physics Berlin v. 2018, n. 174, p. 1-35, 2018

Berlin 2018

Acesso online

  • Título:
    Measurement of D0 , D+, D∗+ and D+ s production in Pb–Pb collisions at √sNN = 5.02 TeV
  • Autor: S Acharya
  • M Bregant; Camila de Conti; Hermann Franz Degenhardt; Diogenes Domenicis Gimenez; Marcel Araujo Silva Figueredo; Cristiane Jahnke; Caio Lagana Fernandes; Paula Fernanda Toledo Matuoka; Marcelo Gameiro Munhoz; Hugo Natal da Luz; Antonio Carlos Oliveira da Silva; Alexandre Alarcon do Passo Suaide; Henrique José Correia Zanoli
  • Assuntos: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS; Heavy Ion Experiments
  • É parte de: Journal of High Energy Physics Berlin v. 2018, n. 174, p. 1-35, 2018
  • Notas: Disponível em: . Acesso em: 05 dez. 2018
  • Descrição: We report measurements of the production of prompt D0 , D+, D∗+ and D+ s mesons in Pb–Pb collisions at the centre-of-mass energy per nucleon-nucleon pair √ sNN = 5.02 TeV, in the centrality classes 0–10%, 30–50% and 60–80%. The D-meson production yields are measured at mid-rapidity (|y| < 0.5) as a function of transverse momentum (pT). The pT intervals covered in central collisions are: 1 < pT < 50 GeV/c for D0 , 2 < pT < 50 GeV/c for D+, 3 < pT < 50 GeV/c for D∗+, and 4 < pT < 16 GeV/c for D+ s mesons. The nuclear modification factors (RAA) for non-strange D mesons (D0 , D+, D∗+) show minimum values of about 0.2 for pT = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at √ sNN = 2.76 TeV. For D+ s mesons, the values of RAA are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average RAA of non-strange D mesons is compatible with that of charged particles for pT > 8 GeV/c, while it is larger at lower pT. The nuclear modification factors for strange and non-strange D mesons are also compared to theoretical models with different implementations of in-medium energy loss.
  • Editor: Berlin
  • Data de criação/publicação: 2018
  • Formato: 35 p.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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