Hadron production in the transfragmentation region in heavy-ion collisions

Hwa, Rudolph C; Yang, C B

doi:10.1103/PhysRevC.73.044913

Title: Hadron production in the transfragmentation region in heavy-ion collisions

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Abstract

We study the production of hadrons in Au+Au collisions in the region 0.6<x{sub F}<1.2, which we refer to as the transfragmentation region (TFR), since it corresponds roughly to {eta}{sup '}>0, where {eta}{sup '}={eta}-y{sub beam}, depending on the transverse momentum p{sub T}. We show how hadrons can be produced in that region when the hadronization process is parton recombination. The inclusive x distributions for proton and pion production are calculated with momentum degradation taken into account. The results show that the proton yield is significantly higher than that of the pions in the TFR. Without particle identification, the existing data cannot be used for comparison with our result on the p/{pi} ratio. Without p{sub T} determination, it is not feasible to relate the x distribution to the experimental {eta}{sup '} distribution. Nevertheless, on theoretical grounds we have shown why the production of hadrons in the TFR is not forbidden by momentum conservation.

Authors:

Hwa, Rudolph C ^[1]; Yang, C B ^[1]

Institute of Theoretical Science and Department of Physics, University of Oregon, Eugene, Oregon, 97403-5203 (United States)

Publication Date:: Sat Apr 15 00:00:00 EDT 2006

OSTI Identifier:: 20771479

Resource Type:: Journal Article

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.73.044913; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COMPARATIVE EVALUATIONS; DISTRIBUTION; GOLD 197 REACTIONS; GOLD 197 TARGET; NUCLEAR REACTION YIELD; PARTICLE IDENTIFICATION; PARTICLE KINEMATICS; PARTICLE PRODUCTION; PARTICLE RAPIDITY; PIONS; PROTONS; TRANSVERSE MOMENTUM

Citation Formats


                    Hwa, Rudolph C, Yang, C B, and Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079. Hadron production in the transfragmentation region in heavy-ion collisions.  United States: N. p., 2006. 
        Web.  doi:10.1103/PhysRevC.73.044913.

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                    Hwa, Rudolph C, Yang, C B, & Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079. Hadron production in the transfragmentation region in heavy-ion collisions.  United States.  https://doi.org/10.1103/PhysRevC.73.044913

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                    Hwa, Rudolph C, Yang, C B, and Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079. 2006.  
        "Hadron production in the transfragmentation region in heavy-ion collisions".  United States.  https://doi.org/10.1103/PhysRevC.73.044913.

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@article{osti_20771479,

  title        = {Hadron production in the transfragmentation region in heavy-ion collisions},

  author       = {Hwa, Rudolph C and Yang, C B and Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079},

  abstractNote = {We study the production of hadrons in Au+Au collisions in the region 0.6<x{sub F}<1.2, which we refer to as the transfragmentation region (TFR), since it corresponds roughly to {eta}{sup '}>0, where {eta}{sup '}={eta}-y{sub beam}, depending on the transverse momentum p{sub T}. We show how hadrons can be produced in that region when the hadronization process is parton recombination. The inclusive x distributions for proton and pion production are calculated with momentum degradation taken into account. The results show that the proton yield is significantly higher than that of the pions in the TFR. Without particle identification, the existing data cannot be used for comparison with our result on the p/{pi} ratio. Without p{sub T} determination, it is not feasible to relate the x distribution to the experimental {eta}{sup '} distribution. Nevertheless, on theoretical grounds we have shown why the production of hadrons in the TFR is not forbidden by momentum conservation.},

  doi          = {10.1103/PhysRevC.73.044913},

  url          = {https://www.osti.gov/biblio/20771479},
  journal      = {Physical Review. C, Nuclear Physics},

  issn         = {0556-2813},

  number       = 4,

  volume       = 73,

  place        = {United States},

  year         = {Sat Apr 15 00:00:00 EDT 2006},

  month        = {Sat Apr 15 00:00:00 EDT 2006}

}

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