The electromagnetic signature of jets

Details The electromagnetic signature of jets The electromagnetic signature of jets

2004-03-17

arxiv.org/abs/nucl-th/0403054v2

J.Phys. G30 (2004) S1013-S1016

Physics

Nuclear Physics

Nuclear Theory

Talk given at Quark Matter 2004. References updated

Scientific paper

10.1088/0954-3899/30/8/049

Recent RHIC data have suggested an interesting scenario where jets, after being formed in the very first instants of the nuclear collision, interact strongly and are absorbed by the hot and dense matter subsequently created. In this respect, electromagnetic signals constitute another class of penetrating radiation. We first propose the study of large mass dileptons induced by the passage of high-energy quark jets through quark-gluon plasma. We find that the yield due to the jet-plasma interaction gets progressively larger as the collision energy increases: it is slightly less than the Drell-Yan contribution at RHIC energies, and it is a factor of 10 larger than Drell-Yan at the LHC. In a related investigation, we then propose to study dilepton-tagged jets. We estimate quantitatively the various background sources, and identify windows where those are sub-dominant.

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