0th Order Heavy Quark Photon Bremsstrahlung

Details 0th Order Heavy Quark Photon Bremsstrahlung 0th Order Heavy Quark Photon Bremsstrahlung

2008-06-18

arxiv.org/abs/0806.3092v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, 3 figures. Contribution to the proceedings for the 24th Winter Workshop on Nuclear Dynamics, April 5-12, 2008, South

Scientific paper

We calculate the 0th order in opacity number distribution of massive photons (gluons) for heavy quark production radiation including interference from the away-side jet. While consistent with the soft photon (gluon) approximation, we find that approximating 1-x with 1, as done in previous calculations, strongly affects the magnitude of energy loss. Restoring gauge invariance by including the radiation associated with the away-side jet fills in the "dead cone," but is a relatively small effect. The Ter-Mikayelian reduction from vacuum energy loss is 10-40% for 5-25 GeV charm and bottom quarks.

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