Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-01-25
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages 2 figs. The version2 has cosmetic changes of the text only
Scientific paper
Shock/sound propagation from the quenched jets have well-defined front, separating the fireball into regions which are and are not affected. While even for the most robust jet quenching observed this increases local temperature and flow of ambient matter by only few percent at most, strong radial flow increases the contrast between the two regions so that the difference should be well seen in particle spectra at some $p_t$, perhaps even on event-by-event basis. We further show that the effect comes mostly from certain ellipse-shaped 1-d curve, the intercept of three 3-d surfaces, the Mach cone history, the timelike and spacelike freezeout surfaces. We further suggest that this "edge" is already seen in an event released by ATLAS collaboration.
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