Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-04-08
Phys.Rev.C78:014903,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 2 figures
Scientific paper
10.1103/PhysRevC.78.014903
The experimental observation of hadrons correlated back-to-back with a (semi-)hard trigger in heavy ion collisions has revealed a splitting of the away side correlation structure in a low to intermediate transverse momentum (P_T) regime. This is consistent with the assumption that energy deposited by the away side parton into the bulk medium produced in the collision excites a sonic shockwave (a Mach cone) which leads to away side correlation strength at large angles. A prediction following from assuming such a hydrodynamical origin of the correlation structure is that there is a sizeable elongation of the shockwave in rapidity due to the longitudinal expansion of the bulk medium. Using a single hadron trigger, this cannot be observed due to the unconstrained rapidity of the away side parton. Using a dihadron trigger, the rapidity of the away side parton can be substantially constrained and the longitudinal structure of the away side correlation becomes accessible. However, in such events several effects occur which change the correlation structure substantially: There is not only a sizeable contribution due to the fragmentation of the emerging away side parton, but also a systematic bias towards small energy deposition into the medium and hence a weak shockwave. In this paper, both effects are addressed.
No associations
LandOfFree
Energy deposition in hard dihadron triggered events in heavy-ion collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Energy deposition in hard dihadron triggered events in heavy-ion collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy deposition in hard dihadron triggered events in heavy-ion collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-540038