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arXiv · 1006.2893

Mach cone induced by $\gamma$-triggered jets in high-energy heavy-ion collisions

Han-Lin Li·Fu-Ming Liu·Guo-Liang Ma·Xin-Nian Wang·Yan Zhu
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Abstract

MMedium excitation by jet shower propagation inside a quark-gluon plasma is studied within a linear Boltzmann transport and a multiphase transport model. Contrary to the naive expectation, it is the deflection of both the jet shower and the Mach-cone-like excitation in an expanding medium that is found to gives rise to a double-peak azimuthal particle distribution with respect to the initial jet direction. Such deflection is the strongest for hadron-triggered jets which are often produced close to the surface of dense medium due to trigger-bias and travel against or tangential to the radial flow. Without such trigger bias, the effect of deflection on $\gamma$-jet showers and their medium excitation is weaker. Comparative study of hadron and $\gamma$-triggered particle correlations can therefore reveal the dynamics of jet-induced medium excitation in high-energy heavy-ion collisions.

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Han-Lin Li, Fu-Ming Liu, Guo-Liang Ma, Xin-Nian Wang, Yan Zhu. 2010-06-15. Mach cone induced by $\gamma$-triggered jets in high-energy heavy-ion collisions. https://doi.org/10.1103/physrevlett.106.012301

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