Radiative energy loss of highenergy quarks in finitesize nuclear matter and quarkgluon plasma
Abstract
The induced gluon radiation of a high energy quark in a finitesize QCD medium is studied. For a sufficiently energetic quark produced inside a medium we find the radiative energy loss $\Delta E_{q}\propto L^{2}$, where L is the distance passed by quark in the medium. It has a weak dependence on the initial quark energy $E_{q}$. The $L^{2}$ dependence turns to $L^{1}$ as the quark energy decreases. Numerical calculations are performed for a cold nuclear matter and a hot quarkgluon plasma. For a quark incident on a nucleus we predict $\Delta E_{q}\approx 0.1 E_{q}(L/10 fm)^{\beta}$, with $\beta$ close to unity.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 April 1997
 DOI:
 10.1134/1.567389
 arXiv:
 arXiv:hepph/9704255
 Bibcode:
 1997JETPL..65..615Z
 Keywords:

 High Energy Physics  Phenomenology
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