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Pseudorapidity distributions of charged particles in Pb-Pb collisions at super proton synchrotron energies from the NA50 experiment

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Abstract

We present the measurements of charged particle pseudorapidity distributions dNch/dη performed by the NA50 experiment in Pb-Pb collisions at the CERN SPS. Measurements were done at incident energies of 40 GeV (√s = 8.77 GeV) and 158 GeV (√s = 17.3 GeV) per nucleon over a broad impact parameter range. The multiplicity distributions are studied as a function of centrality using the number of participating nucleons(N part ), or the number of binary nucleon-nucleon collisions (Ncoll). Their values at midrapidity exhibit a linear scaling withN part at both energies. Particle yield increases approximately by a factor of 2 betweeny √s = 8.77 GeV and √s = 17.3 GeV.

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Authors and Affiliations

  1. Università del Piemonte Orientale, Alessandria and INFN-Torino, Italy

    P. Cortese, G. Dellacasa, L. Ramello, E. Scalas & M. Sitta

  2. LAPP, CNRS-IN2P3, Annecy-le-Vieux, France

    C. Baglin & A. Bussière

  3. LPC, Univ. Blaise Pascal and CNRS-IN2P3, Aubière, France

    A. Baldit, C. Castanier, J. Castor, I. Chevrot, A. Devaux, B. Espagnon, J. Fargeix, P. Force & P. Saturnini

  4. IFA, Bucharest, Romania

    C. Alexa, V. Boldea, S. Constantinescu & S. Dita

  5. Università di Cagliari/INFN, Cagliari, Italy

    C. Cicalò, A. De Falco, P. Macciotta, A. Masoni, G. Puddu, S. Serci & G. L. Usai

  6. CERN, Geneva, Switzerland

    C. Lourenço & P. Sonderegger

  7. LIP, Lisbon, Portugal

    M. C. Abreu, P. Bordalo, G. Borges, T. Claudino, C. Quintans, S. Ramos, P. Rato Mendes, H. Santos, R. Shahoyan & S. Silva

  8. INR, Moscow, Russia

    Y. K. Gavrilov, M. B. Golubeva, F. F. Guber, T. L. Karavitcheva, A. B. Kurepin & N. S. Topilskaya

  9. IPN, Univ. de Paris-Sud and CNRS-IN2P3, Orsay, France

    M. P. Comets, C. Gerschel, D. Jouan, Y. Le Bornee, M. Mac Cormick, X. Tarrago, L. Villatte & N. Willis

  10. LPNHE, Ecole Polytechnique and CNRS-IN2P3, Palaiseau, France

    B. Chaurand, N. Constans, O. Drapier, M. Gonin, L. Kluberg, P. Petiau & A. Romana

  11. IRS, Univ. Louis Pasteur and CNRS-IN2P3, Strasbourg, France

    E. Scomparin

  12. Università di Torino/INFN, Torino, Italy

    Marek Idzik, B. Alessandro, R. Arnaldi, S. Beolè, E. Chiavassa, N. De Marco, M. Gallio, P. Giubellino, M. Idzik, A. Marzari-Chiesa, M. Masera, M. Monteno, A. Musso, A. Piccotti, W. L. Prado da Silva, F. Prino, L. Riccati, F. Sigaudo & E. Vercellin

  13. IPN, Univ. Claude Bernard and CNRS-IN2P3, Villeurbanne, France

    M. Bedjidian, L. Capelli, B. Cheynis, L. Ducroux, J. Y. Grossiord, A. Guichard, R. Haroutunian & J. R. Pizzi

  14. YerPhI, Yerevan, Armenia

    M. Atayan, A. A. Grigorian, S. Grigorian, H. Gulkanyan & R. Hakobyan

  15. FCT, Universidade de Algarve, Faro, Portugal

    M. C. Abreu

  16. IST, Universidade Técnica de Lisboa, Lisbon, Portugal

    P. Bordalo, S. Ramos & P. Sonderegger

  17. CERN, Geneva, Switzerland

    P. Giubellino, M. Masera & G. L. Usai

  18. Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Cracow, Poland

    Marek Idzik & M. Idzik

  19. UERJ, Rio de Janeiro, Brazil

    W. L. Prado da Silva

  20. YerPhI, Yerevan, Armenia

    R. Shahoyan

Authors
  1. Marek Idzik
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  2. M. C. Abreu
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  3. B. Alessandro
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  4. C. Alexa
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  5. R. Arnaldi
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  6. M. Atayan
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  7. C. Baglin
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  8. A. Baldit
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  9. M. Bedjidian
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  15. L. Capelli
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  19. I. Chevrot
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  22. C. Cicalò
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  23. T. Claudino
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  24. M. P. Comets
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  27. P. Cortese
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  28. A. De Falco
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  29. N. De Marco
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  30. G. Dellacasa
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  31. A. Devaux
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  32. S. Dita
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  33. O. Drapier
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  34. L. Ducroux
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  35. B. Espagnon
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  36. J. Fargeix
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  37. P. Force
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  38. M. Gallio
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  39. Y. K. Gavrilov
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  40. C. Gerschel
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  41. P. Giubellino
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  42. M. B. Golubeva
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  43. M. Gonin
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  44. A. A. Grigorian
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  46. J. Y. Grossiord
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  47. F. F. Guber
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  48. A. Guichard
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  49. H. Gulkanyan
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  50. R. Hakobyan
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  51. R. Haroutunian
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  52. M. Idzik
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  53. D. Jouan
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  54. T. L. Karavitcheva
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  55. L. Kluberg
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  56. A. B. Kurepin
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  58. C. Lourenço
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  59. P. Macciotta
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  60. M. Mac Cormick
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  61. A. Marzari-Chiesa
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  62. M. Masera
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  64. M. Monteno
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  65. A. Musso
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  66. P. Petiau
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  67. A. Piccotti
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  68. J. R. Pizzi
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  69. W. L. Prado da Silva
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  70. F. Prino
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  71. G. Puddu
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  72. C. Quintans
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  73. L. Ramello
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  74. S. Ramos
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  75. P. Rato Mendes
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  76. L. Riccati
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  77. A. Romana
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  78. H. Santos
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  79. P. Saturnini
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  80. E. Scalas
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  81. E. Scomparin
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  82. S. Serci
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  83. R. Shahoyan
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  84. F. Sigaudo
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  85. S. Silva
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  86. M. Sitta
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  87. P. Sonderegger
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  88. X. Tarrago
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  89. N. S. Topilskaya
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  90. G. L. Usai
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  91. E. Vercellin
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  92. L. Villatte
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  93. N. Willis
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Idzik, M., NA50 Collaboration., Abreu, M.C. et al. Pseudorapidity distributions of charged particles in Pb-Pb collisions at super proton synchrotron energies from the NA50 experiment. Pramana - J Phys 60, 1059–1065 (2003). https://doi.org/10.1007/BF02707031

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