Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at s NN = 2.76 TeV with the ATLAS Detector at the LHC
University of Freiburg · University of Oklahoma · +229 more institutions
Abstract
By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters. The transverse energies of dijets in opposite hemispheres are observed to become systematically more unbalanced with increasing event centrality leading to a large number of events which contain highly asymmetric dijets. This is the first observation of an enhancement of events with such large dijet asymmetries, not observed…
Citation impact
- FWCI
- 127.62
- Percentile
- 100%
- References
- 9
Authors
3039Topics & keywords
- Physics
- Centrality
- Asymmetry
- Particle physics
- Combinatorics
- Mathematics
- Affordable and clean energy
Funding
- CCERN
- SAScience and Technology Facilities CouncilAwards: ST/H00095X/1, ST/F007337/1, ST/F00754X/1, ST/I505756/1, PP/E000444/1, ST/H001093/1, ST/I000186/1, ST/H001034/1, ST/H001026/2, PP/E000347/1, ST/H001077/1, ST/H001026/1, ST/G009457/1, ST/H001093/2, ST/H001069/1, PP/E003087/1, PP/E000487/1, PP/E006388/1, PP/E003699/2, GRIDPP, ST/G502320/1, ST/F007450/1, PP/E003699/1, ST/H001166/1, ST/F007418/1, ST/I006080/1, ST/H000887/2, ST/H00095X/2