Recent Heavy Ion Results with the ATLAS Detector at the LHC

Details Recent Heavy Ion Results with the ATLAS Detector at the LHC Recent Heavy Ion Results with the ATLAS Detector at the LHC

2011-07-12

arxiv.org/abs/1107.2182v1

Physics

Nuclear Physics

Nuclear Experiment

9 pages, 9 figures, proceedings for Quark Matter 2011, Annecy, France, May 23-28, 2011

Scientific paper

Results are presented from the ATLAS collaboration from the 2010 LHC heavy ion run, during which nearly 10 inverse microbarns of luminosity were delivered. Soft physics results include charged particle multiplicities and collective flow. The charged particle multiplicity, which tracks initial state entropy production, increases by a factor of two relative to the top RHIC energy, with a centrality dependence very similar to that already measured at RHIC. Measurements of elliptic flow out to large transverse momentum also show similar results to what was measured at RHIC, but no significant pseudorapidity dependence. Extensions of these measurements to higher harmonics have also been made, and can be used to explain structures in the two-particle correlation functions that had long been attributed to jet-medium interactions. New hard probe measurements include single muons, jets and high $p_T$ hadrons. Single muons at high momentum are used to extract the yield of $W^{\pm}$ bosons and are found to be consistent within statistical uncertainties with binary collision scaling. Conversely, jets are found to be suppressed in central events by a factor of two relative to peripheral events, with no significant dependence on the jet energy. Fragmentation functions are also found to be the same in central and peripheral events. Finally, charged hadrons have been measured out to 30 GeV, and their centrality dependence relative to peripheral events is similar to that found for jets.

Affiliated with

Also associated with

No associations

Rating

Recent Heavy Ion Results with the ATLAS Detector at the LHC 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 Recent Heavy Ion Results with the ATLAS Detector at the LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recent Heavy Ion Results with the ATLAS Detector at the LHC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-564774