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Energy and centrality dependence of dNch/d\(\eta\) and dET/d\(\eta\) in heavy-ion collisions from \(\sqrt{s_{NN}} = 7.7\) GeV to 5.02 TeV

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Abstract.

The centrality dependence of pseudorapidity density of charged particles and transverse energy is studied for a wide range of collision energies for heavy-ion collisions at midrapidity from 7.7GeV to 5.02TeV. A two-component model approach has been adopted to quantify the soft and hard components of particle production, coming from nucleon participants and binary nucleon-nucleon collisions, respectively. Within experimental uncertainties, the hard component contributing to the particle production has been found not to show any clear collision energy dependence from RHIC to LHC. The effect of centrality and collision energy in particle production seems to factor out with some degree of dependency on the collision species. The collision of uranium-like deformed nuclei opens up new challenges in understanding the energy-centrality factorization, which is evident from the centrality dependence of transverse energy density, when compared to collision of symmetric nuclei.

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Authors and Affiliations

  1. Discipline of Physics, School of Basic Sciences, Indian Institute of Technology Indore, 453552, Indore, India

    Aditya Nath Mishra, Raghunath Sahoo, Pragati Sahoo, Pooja Pareek & Nirbhay K. Behera

  2. Department of Physics, Indian Institute of Technology Bombay, 400067, Mumbai, India

    Basanta K. Nandi

Authors
  1. Aditya Nath Mishra
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  2. Raghunath Sahoo
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  3. Pragati Sahoo
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  4. Pooja Pareek
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  5. Nirbhay K. Behera
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  6. Basanta K. Nandi
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Corresponding author

Correspondence to Raghunath Sahoo.

Additional information

Communicated by G. Torrieri

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Nath Mishra, A., Sahoo, R., Sahoo, P. et al. Energy and centrality dependence of dNch/d\(\eta\) and dET/d\(\eta\) in heavy-ion collisions from \(\sqrt{s_{NN}} = 7.7\) GeV to 5.02 TeV. Eur. Phys. J. A 52, 319 (2016). https://doi.org/10.1140/epja/i2016-16319-3

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  • DOI: https://doi.org/10.1140/epja/i2016-16319-3

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