Photopion Production at Higher Energies

Title: Photopion Production at Higher Energies

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Abstract

Photopion production from a nucleon target is a fundamental process that is essential for studies of high-energy photoreactions in nuclei and for the study of quark models in the high energy regime. The approved JLAB experiment E94-104 uses a 6 GeV beam to investigate the constituent quark counting rule for the gamma n --> pi{sup -} p differential cross section. This measurement can be extended to 8 GeV as JLAB energies are upgraded. Quark model predictions for the momentum dependence of the ratio of pi{sup -} to pi{sup +} photoproduction from the nucleon make their relative cross-section an important observable to investigate at high energies. Not only will it provide a decisive test of pion photoproduction models, but it is an excellent means of investigating the transition from a description based on nucleon-meson degrees of freedom to a QCD-based description in terms of quark-gluon degrees of freedom.

Authors:: Gao, H; Black, T

Publication Date:: 1998-06-01

Research Org.:: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)

Sponsoring Org.:: USDOE Office of Energy Research (ER) (US)

OSTI Identifier:: 841734

Report Number(s):: JLAB-PHY-98-63; DOE/ER/40150-3498
TRN: US0502774

DOE Contract Number:: AC05-84ER40150

Resource Type:: Conference

Resource Relation:: Conference: Jefferson Lab Physics & Instrumentation with 6-12 GeV Beams, Newport News, VA (US), 06/15/1998--06/18/1998; Other Information: PBD: 1 Jun 1998

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DEGREES OF FREEDOM; DIFFERENTIAL CROSS SECTIONS; NUCLEI; NUCLEONS; PHOTOPRODUCTION; PHYSICS; PIONS; PRODUCTION; QUARK MODEL; QUARKS; TARGETS

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                    Gao, H, and Black, T. Photopion Production at Higher Energies.  United States: N. p., 1998. 
        Web.

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                    Gao, H, & Black, T. Photopion Production at Higher Energies.  United States.

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                    Gao, H, and Black, T. Mon .  
        "Photopion Production at Higher Energies".  United States.  https://www.osti.gov/servlets/purl/841734.

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@article{osti_841734,

  title        = {Photopion Production at Higher Energies},

  author       = {Gao, H and Black, T},

  abstractNote = {Photopion production from a nucleon target is a fundamental process that is essential for studies of high-energy photoreactions in nuclei and for the study of quark models in the high energy regime. The approved JLAB experiment E94-104 uses a 6 GeV beam to investigate the constituent quark counting rule for the gamma n --> pi{sup -} p differential cross section. This measurement can be extended to 8 GeV as JLAB energies are upgraded. Quark model predictions for the momentum dependence of the ratio of pi{sup -} to pi{sup +} photoproduction from the nucleon make their relative cross-section an important observable to investigate at high energies. Not only will it provide a decisive test of pion photoproduction models, but it is an excellent means of investigating the transition from a description based on nucleon-meson degrees of freedom to a QCD-based description in terms of quark-gluon degrees of freedom.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/841734},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {6}

}

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