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Parton transverse momentum distribution at the moment of hadronization at RHIC

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Abstract

We extract the transverse momentum distribution of effective partons using the spectra of Ω, Ξ, Λ and ϕ hadrons measured by the STAR Collaboration from Au + Au collisions at \( \sqrt {s_{NN} } \) = 200 GeV at RHIC. The extracted momentum distribution of strange quarks is flatter than that of up/down quarks consistent with hydrodynamics expansion in partonic phase prior to hadronization. Consistency in quark ratios derived from various hadron spectra gives clear evidence for hadron production as suggested by quark coalescence or recombination model.

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Authors and Affiliations

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P O Box 800-204, Shanghai, 201800, China

    F. Jin, J. H. Chen & Y. G. Ma

  2. Graduate School of the Chinese Academy of Sciences, Beijing, 100080, China

    F. Jin & J. H. Chen

  3. Department of Physics and Astronomy, University of California, Los Angeles, CA, 90095, USA

    H. Z. Huang

Authors
  1. F. Jin
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  2. J. H. Chen
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  3. H. Z. Huang
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  4. Y. G. Ma
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Correspondence to J. H. Chen.

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Jin, F., Chen, J.H., Huang, H.Z. et al. Parton transverse momentum distribution at the moment of hadronization at RHIC. Indian J Phys 85, 161–165 (2011). https://doi.org/10.1007/s12648-011-0035-5

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  • DOI: https://doi.org/10.1007/s12648-011-0035-5

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