2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C16, 527-536
DOI 10.1007/s100520000437

Nuclear geometry of jet quenching

I.P. Lokhtin - A.M. Snigirev

M.V. Lomonosov Moscow State University, D.V. Skobeltsyn Institute of Nuclear Physics, Moscow, Russia

Received: 10 February 2000 / Revised version: 18 April 2000 / Published online: 6 July 2000 - © Springer-Verlag 2000

The most suitable way to study jet quenching as a function of the distance traversed is varying the impact parameter b of the ultrarelativistic nucleus-nucleus collision (the initial energy density in the nuclear overlapping zone is almost independent of b up to $b \sim R_A$). It is shown that the b-dependences of the medium-induced radiative and collisional energy losses of a hard parton jet propagating through dense QCD matter are very different. The experimental verification of this phenomenon could be performed for a jet with non-zero cone size based on the essential difference between the angular distributions of the collisional and radiative energy losses.

Copyright Società Italiana di Fisica, Springer-Verlag 2000