Direct photon production in 158 A GeV 208Pb+208Pb collisions

Peitzmann, T.

doi:10.1016/s0375-9474(01)00556-5

Cited by 4 publications

(1 citation statement)

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“…Photons are produced mainly in charged particle scattering. The production of direct photons was predicted as a good signature for the study of a quarkgluon [6].The term "direct photon" refers to those photons which are produced in the hard-scattering subprocess and are not decay products of some particle. photons can only interact electromagnetically and so any photons produced in the quark-gluon phase are likely to survive until detected.…”

Section: ‫العكيمي‬ ‫جبار‬ ‫هادي‬mentioning

confidence: 99%

Theoretical Study of the Effect of the Coupling Constant Strength on the Photons Rate Yield for Quark Gluon Interaction

AL-Agealy

2014

UTJsci

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Rate of photon yield in a quark-gluon interaction exhibits of the coupling constant strength and temperature dependence have been studied theoretically .The estimation of the coupling constant strength is very important tool for the investigation of the QCD, which has been applied to the dynamical quarks = 3, 5, ,and gluon = 0 . Depending upon the the coupling constant data ,it shows that the strong force is relatively weak for quarks, and the two quarks move farther apart the force becomes stronger. The weakness of interaction at short distance is called asymptotic freedom, while the strength of the long distance is called confinement .Rate of the photon yield in a quark-gluon interaction which investigation due to the electric charge of the quark with color quantum number. Photon’s rate has been calculated increasing with increases in temperature and decreasing the coupling constant and photon’s yield from the system has height fever number larger than system has low fever number

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Section: ‫العكيمي‬ ‫جبار‬ ‫هادي‬mentioning

confidence: 99%