Chemical Relaxation Times in a Hadron Gas at Finite Temperature

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The relaxation time of particle numbers in hot hadronic matter with vanishing baryon number are estimated using the ideal gas approximation and taking into account resonance decays and annihilation processes as the only sources of particle number fluctuations.Near the QCD critical temperature the longest relaxation times turn out to be of the order of 10 fm and grow roughly exponentially to become of the order of 10^3 fm at temperatures around 100 MeV.As a consequence of such long relaxation times, a clear departure from chemical equilibrium must be observed in the momentum distribution of secondary particles produced in high energy ... continued below

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page(s) 401-406

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Goity, Jose July 1, 1993.

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The relaxation time of particle numbers in hot hadronic matter with vanishing baryon number are estimated using the ideal gas approximation and taking into account resonance decays and annihilation processes as the only sources of particle number fluctuations.Near the QCD critical temperature the longest relaxation times turn out to be of the order of 10 fm and grow roughly exponentially to become of the order of 10^3 fm at temperatures around 100 MeV.As a consequence of such long relaxation times, a clear departure from chemical equilibrium must be observed in the momentum distribution of secondary particles produced in high energy nuclear collisions.

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page(s) 401-406

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  • Journal Name: Physics Letters B; Journal Volume: 319

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  • Report No.: CEBAF-TH-93-14
  • Grant Number: AC05-84ER40150
  • DOI: 10.1016/0370-2693(93)91741-5 | External Link
  • Office of Scientific & Technical Information Report Number: 954362
  • Archival Resource Key: ark:/67531/metadc926826

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Office of Scientific & Technical Information Technical Reports

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  • July 1, 1993

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 22, 2016, 10:26 p.m.

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Goity, Jose. Chemical Relaxation Times in a Hadron Gas at Finite Temperature, article, July 1, 1993; [Newport News, Virginia]. (digital.library.unt.edu/ark:/67531/metadc926826/: accessed August 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.