Induced gluon radiation in a QCD medium

Nov, 1994
10 pages
Published in:
  • Phys.Lett.B 345 (1995) 277-286
  • Published: 1995
e-Print:
Report number:
  • LU-TP-94-21,
  • LPTHE-ORSAY-94-98,
  • BI-TP-94-57

Citations per year

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Abstract:
Soft gluon radiation induced by multiple scattering of a fast quark or gluon propagating through QCD matter is discussed. After revisiting the Landau-Pomeranchuk-Migdal effect in QED we show that large formation times of bremsstrahlung quanta determine the QCD radiation intensity (in analogy to QED) and derive the gluon energy spectrum. Coherent suppression takes place as compared to the Bethe-Heitler situation of independent emissions. As a result the energy loss of fast partons in a QCD medium depends on the incident energy EE similarly to QED, dE/dzE-dE/dz \propto \sqrt{E}.
Note:
  • 13 pages, 3 included figures, latex file. Report-no: LPTHE-Orsay 94-98, LU TP 94-21, BI-TP 94-57
  • quantum chromodynamics
  • quark: multiple scattering
  • multiple scattering: quark
  • gluon: multiple scattering
  • multiple scattering: gluon
  • gluon: radiation
  • quantum electrodynamics
  • photon: bremsstrahlung
  • bremsstrahlung: photon
  • gluon: energy spectrum