Comparison of jet quenching formalisms for a quark-gluon plasma ``brick''
Abstract
We review the currently available formalisms for radiative energy loss of a high-momentum parton in a dense strongly interacting medium. The underlying theoretical framework of the four commonly used formalisms is discussed and the differences and commonalities between the formalisms are highlighted. A quantitative comparison of the single-gluon emission spectra as well as the energy-loss distributions is given for a model system consisting of a uniform medium with a fixed length of L=2 fm and L=5 fm (the “Brick”). Sizable quantitative differences are found. The largest differences can be attributed to specific approximations that are made in the calculation of the radiation spectrum.
- Publication:
-
Physical Review C
- Pub Date:
- December 2012
- DOI:
- 10.1103/PhysRevC.86.064904
- arXiv:
- arXiv:1106.1106
- Bibcode:
- 2012PhRvC..86f4904A
- Keywords:
-
- 25.75.Bh;
- 13.87.-a;
- 12.38.Mh;
- Hard scattering in relativistic heavy ion collisions;
- Jets in large-Q<sup>2</sup> scattering;
- Quark-gluon plasma;
- High Energy Physics - Phenomenology
- E-Print:
- 30 pages, 24 figures update version2: added curves with large x to Figure 14, Higher Twist curves to Figs 19, 20, plus some changes in the text (introduction/summary, discussion of Fig 14 and HT section)