Relatorio tecnico

Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at p sNN = 2:76TeV (2013)

• Authors:
  • Abbas, E
  • Carlin Filho, Nelson
  • Barros, Gabriel Oliveira Valeriano de
  • Deppman, Airton
  • Figueredo, Marcel Araujo Silva
  • Jahnke, Cristiane
  • Godoy, Denise Aparecida Moreira de
  • Munhoz, Marcelo Gameiro
  • Silva, Antonio Carlos Oliveira da
  • Oliveira Filho, Elienos Pereira de
  • Suaide, Alexandre Alarcon do Passo
  • Szanto de Toledo, Alejandro
• USP affiliated authors: CARLIN FILHO, NELSON - IF ; DEPPMAN, AIRTON - IF ; MUNHOZ, MARCELO GAMEIRO - IF ; SUAIDE, ALEXANDRE ALARCON DO PASSO - IF ; TOLEDO, ALEJANDRO SZANTO DE - IF
• Unidade: IF
• Subjects: COLISÕES DE ÍONS PESADOS RELATIVÍSTICOS; CROMODINÂMICA QUÂNTICA
• Language: Inglês
• Abstract: We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0–5%, 5–10%, 10–20%, and 20–30% most central events) in Pb–Pb collisions at p sNN = 2:76TeV at the LHC. The measurement is performed using the full coverage of the ALICE detectors,-5:0 < h < 5:5, and employing a special analysis technique based on collisions arising from LHC ‘satellite’ bunches. We present the pseudorapidity density as a function of the number of participating nucleons as well as an extrapolation to the total number of produced charged particles (Nch = 17165 772 for the 0-5% most central collisions). From the measured dNch=dh distribution we derive the rapidity density distribution, dNch=dy, under simple assumptions. The rapidity density distribution is found to be significantly wider than the predictions of the Landau model. We assess the validity of longitudinal scaling by comparing to lower energy results from RHIC. Finally the mechanisms of the underlying particle production are discussed based on a comparison with various theoretical models.
• Imprenta:
  • Publisher place: São Paulo
  • Date published: 2013


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How to cite

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• ABNT

  ABBAS, E et al. Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at p sNN = 2:76TeV. . São Paulo: Instituto de Física, Universidade de São Paulo. Disponível em: http://lanl.arxiv.org/pdf/1304.0347.pdf. Acesso em: 03 out. 2024. , 2013

• APA

  Abbas, E., Carlin Filho, N., Barros, G. O. V. de, Deppman, A., Figueredo, M. A. S., Jahnke, C., et al. (2013). Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at p sNN = 2:76TeV. São Paulo: Instituto de Física, Universidade de São Paulo. Recuperado de http://lanl.arxiv.org/pdf/1304.0347.pdf

• NLM

  Abbas E, Carlin Filho N, Barros GOV de, Deppman A, Figueredo MAS, Jahnke C, Godoy DAM de, Munhoz MG, Silva ACO da, Oliveira Filho EP de, Suaide AA do P, Szanto de Toledo A. Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at p sNN = 2:76TeV [Internet]. 2013 ;[citado 2024 out. 03 ] Available from: http://lanl.arxiv.org/pdf/1304.0347.pdf

• Vancouver

  Abbas E, Carlin Filho N, Barros GOV de, Deppman A, Figueredo MAS, Jahnke C, Godoy DAM de, Munhoz MG, Silva ACO da, Oliveira Filho EP de, Suaide AA do P, Szanto de Toledo A. Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at p sNN = 2:76TeV [Internet]. 2013 ;[citado 2024 out. 03 ] Available from: http://lanl.arxiv.org/pdf/1304.0347.pdf

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