Angular hadron correlations probing the early medium evolution

Thorsten Renk, Kari J Eskola
2007 Journal of Physics G: Nuclear and Particle Physics  
Hard processes are a well calibrated probe to study heavy-ion collisions. However, the information to be gained from the nuclear suppression factor R_AA is limited, hene one has to study more differential observables to do medium tomography. The angular correlations of hadrons associated with a hard trigger appear suitable as they show a rich pattern when going from low p_T to high p_T. Of prime interest is the fate of away side partons with an in-medium pathlength O(several fm). At high p_T
more » ... correlations become dominated by the punchtrough of the away side parton with subsequent fragmentation. We discuss what information about the medium density can be gained from the data.
doi:10.1088/0954-3899/34/8/s68 fatcat:i2omx265bzenllkt6nxiikq2se