RHIC STAR detector jet topology results (IMAGE) DOE/Brookhaven National Laboratory Caption In both wide (red) and narrow (blue) jets tracked by the STAR detector, the energy of high- and low-momentum particles within the jet cone (θSJ) accounts for all the energy "lost" to quenching. This means quenching happens before the quark fragments to form the jet substructure. Credit Brookhaven National Laboratory Usage Restrictions OK for use with stories about this research License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.